Op has a point. People who stan big 3 + hybe groups are well aware their groups are privileged. They get more promotion, more opportunities, have the chance to build established fandoms and so on and so on. Whoever denies the privilege of these groups is just lying to themselves.
But. People also use that "privilege card" to hate and shame on those groups all the time. They act as if these idols have it easy when in fact they are so overworked, when they have to be flawless and do no mistakes in order to even get the chance to be a trainee under the company. Not only, they also keep saying their success is only due to the privilege. They claim that these groups are all not that talented, don't work as hard as their faves and their achievements are caused by their company. That's so offensive, ridiculous and shameful. It's not fair, it keeps happening all the time. Both people who think privilege doesn't exist and people who use privilege as a way to attack groups are equally bad so..