Memes have been weaponized in the modern political era. Anecdotal, of course, but I have read interviews with Qanon/hard core Trump folks and a lot of them started with pretty neutral or even liberal views that shifted over time. Many of them attributes the red pill and right wing memes as a contributing factor to their radicalization. Despite your labeling it stupid and moronic these forums do have the power to shift political narratives. I’m not passing judgement on these forums, but I no longer view them as harmless toys. Real people are shaping their world views on these forums and they are having a noticeable impact in the world.
Young people can be very bored and lazy and are very impressionable at the time in their lives when they may end up on these counter culture style forums.