Shepard asked what it would take for Vega to be interested in her. He responded that it would take him being in a very specific mindset... one that necessarially includes him being unable to consent. James answered Shepard's question: it would take alcohol to get him anywhere near being willing to sleep with Shepard.
"near being willing", no he would be willing before imo if not for that Commander thing, but then he also knows he will not go any further. Meaning, a relationship. That's why he only settles for the one-night stand. He said himself that he has been in some physical only relationships before he shows Shepard his tattoo. He tells you that he has been in no serious relationships since he joined the military, but he's still flesh and blood, meaning he has his needs, too. So this is not new to him (hell, he can even hook-up with Ash for the night if she's alive...). The only thing that is new to him is that his superior, a person he respects way too much, is interested in him (It doesn't even have to be that Shepard only wants sex from James, she could've fallen for him and is genuinely interested in more besides the flirting; I RP my Shepard that way). I hope you can see a bit more where I'm coming from now, because believe me, at first I was also put off.
But it also makes sense to me now why he reacted the way he reacted. And if I'm being honest, if I was in James's situation and needed a bit of alcohol to find some courage, I might do it too (now I'm sure I won't ever be in such a situation as I dislike one-night stands and parties in general, but hypothetical speaking...). I'm very shy in real life and I can somewhat understand why he wants to drink. It does loosen you up, and I was able to talk more open when I drank back when I was younger. But that doesn't mean I wasn't still knowing what I'm doing.
If you ask Cortez how James is doing, he'll say that James is still undecided, even after a few drinks. It's only when Shepard approaches and begins (verbally) pushing him towards her bed that he begins to lean towards the idea of having sex with Shepard.
To me it sounded more like James was conflicted before (yes, we've seen this), but he liked the fact that something was heating up between him and Shepard. And Cortez is a lovely guy, so who in their right mind would say then "It was actually kinda sweet" and "you two deserve each other" if it would be as bad as you say? If James would've been clearly still so conflicted as you say, leaning more towards no, Bioware would not have Cortez say that, I'm pretty sure.
Shepard is the one initiating the topic, constantly pressuring Vega towards the idea that sex with her is the correct thing for him to do. She makes it seem like his reluctance to diddle her is a personal insult to her (twice), which robs him of his agency. Despite being given numerous examples of Vega being uneasy with the prospect, Shepard continues to push him towards her bed.
Yes, I can agree to that a bit. She doesn't give up. She also did that with Jacob from what I know. And there are people in real life just as pushy.
But like I said, it doesn't need to be "I only want sex with him." FemShep was screwed over pretty badly with her romances.
I guess we all perceive things differently, but to me she looked really really hurt when Vega first turned her down... for being the Commander; after constantly flirting with her.
Look at it this way. If a guy were at a party with a girl that sorta liked him, and he continually pushed her to drink and to have sex with him until she finally relented, would you not see that as coercive rape?
Ok, I have one problem with your example here: you say "continually" pushing to drink. Shepard doesn't do that continually. She is pushy before, but like I said already, AFTER James brings alcohol into play she asks him one time "how the drinks are going down" (and yes, I actually hate that sentence, it's stupid. But whatever). One question in regards to the drinks. That's not continually to me.
Look at it any way you want, this is rape on no less than two counts. Bioware should be ashamed of themselves for normalizing and dismissing female-on-male rape... and, if we're being quite honest, so should you.
Believe it or not I did question myself if I'm not thinking about this a bit too "laid-back" (as I said before, rape IS a very serious topic).
I've read so many youtube comments that are on your side and say how this is rapey. In between I've found a couple ones that are on the same side as I am. Maybe it's all in how we think about alcohol. Because I don't think drinking a bit to find courage is a bad thing if the person who does it is fully aware why he or she is drinking in the first place. And it's clear to me that James does know that very well.
Drinking to overcome your anxieties and inhibitions is actually a thing: Dutch/liquid courage, and this is very different from involuntary intoxication. It means that you're well aware of what you're doing. If someone is drinking to find courage, he/she is following through knowing very well about the effect of alcohol, hazarding the consequences.
And I've also looked really hard into what the dialogue could mean in regards to James's reaction, and it just made sense to me. I'm also having the opinion that if James would have not liked it, he wouldn't have asked if Shepard's interested in him in the first place. This is crucial to me. He wants to know if she's serious, but he's still also holding himself back despite wanting more, too.
So yeah, that's how I see it and I know my opinion is not the popular one, but I hope you can see a bit more now why I think like that.