The same is true. Echo chambers are bad, and it you want evidence of that on the left, look no further than Lemmy.ml.

Quite often people with extreme views violate the rules, so they get banned. The rest tend to improve my experience overall. I've had good and bad discussions with people on all extremes of the political spectrum on Reddit, and that's because there were communities for everyone. I'd avoid the toxic communities like the_donald, but I very much enjoyed many of the others. My favorite subreddits were the neutral* subreddits (esp. neutral news), which contrary to the name didn't enforce neutrality, but required sources for every claim, and people from all over the political spectrum would provide fantastic evidence for their claims.

I would avoid all of the above communities be ajse I don't think segregating myself by gender and biological sex fosters good discussion, nor do I crave acceptance. But others obviously disagree, and I think that's fine. It shouldn't be on the platform to decide how people self-organize, it should only step in if people are breaking the rules.