There's a large difference in being the demographic who thinks labeling lies from the president as lies is censorship and actual censorship. No one fled to a different social media site when the others stopped allowing depictions of violence or other explicit images.
Peddling damaging conspiracy theories that incite others to violence, undermine free elections or democratic institutions, etc. isn't censorship, particularly not in a world where disinformation is weaponized and entities exist simply to create, spread and magnify it.
Besides, Parler isn't any less "censored" than anywhere else. They just saw a hole in the market for victim-minded right-wing pundits and Q folks and branded themselves as the place that won't censor *that*. It's another in the long line of grifts.