It says a lot about the issue being discussed. I don't think the posturing about multiplayer is an accurate reflection of that poster's intentions.
It says that, generally, people make an incredible amount of noise about their one really specific pet issue before launch, and huff and puff about their purchasing decision being based on that, before buying the game anyway.
It's not contempt for the person, but understanding that if you're hanging around a videogame forum months before it launches, you're probably interested enough to buy it regardless of what they do with MP.
I went back and looked at the ME3 MP announcement thread a few weeks ago. The number of people who said "I'm not buying this rawr" with an ME3 badge under their name is hilarious.
I had a friend on another forum that thought I was bluffing about MotB, the expansion to NWN 2. After my experience with Atari's customer service, coupled with DRM that actually locked me out of legally obtained licenses on my computer. It took me 10 years to finally buy it, and I got it for a dollar.
I am interested enough in this game that I have already pre-ordered it. If, however, MP turns out to be able affect the SP campaign in a way that I can't achieve in SP, as it still does in ME 3, it may be 10 years before you see that tag under my name, if you ever do. I will assess what info is released, if there's even any info to release, and make my decision then. If I'm not happy with what I see, I'm heading over to Amazon immediately after, and cancelling my pre-order. It's really that simple. I'm a hell of a poker player, but I don't bluff. If it disappoints, I'll move on to some other game, it's what I've been doing for decades, and will continue to do. There won't be any bluster, there won't be any "I told you xxx", I'll just be on my way.