I really dislike confession blogs. It doesn't matter what fandom it's in, most of the confessions are negative towards something, if not overtly then implied. And that one was pretty overt! I used to reply to them, but ugh. Tumblr is not a good place for discourse. It has it's strengths, but that is definitely one of it's weaknesses. I actually have a lot of confession blogs blocked, to keep my tumblr in a more happy space. I also wish people would learn to use tumblr tags properly. Things against Blackwall shouldn't be showing up in the blackwall tag, they should be in a Blackwall critical tag. I wouldn't tag cullen or solas in a something negative towards them, it would be "cullen critical" or "anti-solas". Examples, since i'm not anti Solas, though he's not in my top favorites.
I've never understood why people have to tear down one group in order to make their own group better. I don't think that poster was even necessarily trying to be mean about it. But it's like since they see the world one way, it's unfathomable that others might hold a different view. It doesn't even occur to them.
I've finally just started a Cullen romance, and I'm enjoying it, but Blackwall and Dorian are by far my top favorites. With Trevelyans, even. Because Blackwall and Dorian are my first choices, no matter what the race!