Even if they're different people, they must be a vocal minority since the games that they seem to complain about tend to be the ones that sell the most copies
As someone that mostly plays relatively niche games, I love DLC. I went from getting a game, then an expansion if I am lucky to getting a game with constant development for 10 years. Ill happily pay $10-20 for my favorite niche sandbox games to give me another 100 hours of play time.
DLC was the worst thing to happen to gaming, gamers hated DLC, they still hate DLC, but...
They spend a few billion a year on it, and each year spend more and more. Companies follow money more than they follow social media rants.