If a media of any kind starts to filter what I can see, I will loose trust in that media. Being blind to the opposing side, and being stuck in a bubble where everyone agrees with me is the perfect place for misinformation to spread.
> And political posts and comments on HN are everywhere
There is a difference between "i think that ... because ..." (expressing yourself) and "we should censor/attack/cancel ... because they are the bad guys" (propaganda).