That doesn't appear to be true.
Something like r/watchpeopledie, they don't have to censor, and it seems contained. I wouldn't want to visit it, not more than once, it may not be healthy in general, but taking it down seems to be "just" censorship?
Other than pornography they seem to have markedly cleaned up and taken a much more advertising friendly focus; seems much less to have the dingy back alleys it once did (but maybe that's a biased view).
Haven't they closed subreddits to quash some radical conservative talk?
Are you part of the Reddit administration?
Rightly or wrongly there appears to have been a lot of censorship over the last couple of years.