There's some evidence that it's a vocal minority. Taking a game made by a terrible company that has a lot of dark patterns, Call of Duty Black Ops 6 has sold at least 491 thousand units (https://steamdb.info/app/1938090/charts/) (certainly far higher, but apparently they haven't published the sales figures, so this is the best lower bound that we get), yet you see far fewer than that number of Reddit posts and comments and upvotes, or upvotes on YouTube videos about these terrible practices.

I suspect that the majority of those who play games would rather these mechanics not exist, but don't feel strongly enough about it to boycott those games. I don't have evidence for this beyond my interactions with personal friends and their "mild apathetic unhappiness" for lack of a better term.

There's also definitely a number of people that are willing to accept some compromise to either play a very well-made game, or one that their friends are playing. I hate Epic Games and its practices, for instance, but I'm willing to play Fortnite with friends if they ask me, and I justify that by telling myself that I'm never going to buy anything with their premium currency.