Self proclaimed communists that claim to want power for the people but rally for an authoritarian dictator who holds all the power. Not much different from monarchists.
Usually a strong idolatry and religious type fixation of deifying individuals to remain in power.
When it comes to the average person it's more important to be willing to jump to another platform if an alternative comes up than waiting for a perfect one that will likely never appear. Repeating the cycle of joining and leaving I think is better than just staying when it comes to the average person and mainstream platforms.