Sure. In the abstract, I agree with you. It can happen. But that is only specific cases. In the general case of social pressure, acquiescing is by no mean a likely result.
I'm never going to change my mind about anything as a result of "social pressure" on EnWorld. You might get there through reasoned debate until I come around to your point of view, but the important hominid parts of social pressure don't exist on EnWorld to force that outcome. I'm literally never going to feel the necessary emotions the way that someone might in a room of known, trusted and respected people browbeating them.
And most of the time what happens there is fake acquiescence. The person pretends to acquiesce in order to escape the situation but with no actual feelings changed and often with lost respect for the formerly trusted and respected persons (which maybe should count as defeat of the attackers?) and then intention to simply deceive those parties in the future. And that's at most. Other times the person cloaks themselves in stubbornness and anger and takes on the whole room tooth and nail and refuses to yield anything. I've seen both.