There is moderation and there is censorship. Nobody is against filtering spam. Trolling is fine in my opinion. Just let the user have the option of blocking who they want to block an follow who they want to follow.
> Add that to the fact that you'll get people that will just push to boycott such kind of platforms, and thus you'll no longer have much possible ways to make this kind of platform exist.
If that was true, twitter, reddit, facebook, google wouldn't exist in the first place.
> That's also kind of impossible.
No it is not. Publishers don't find it impossible. Platforms don't find it impossible. If it was impossible, telcoms and publishers wouldn't exist.
> It could be an interesting experiment though to allow legally the kind of platform you suggest.
We already had this kind of platform.
> It would most probably look like 4chan, but still interesting.
No, it would look like 2009-2013 twitter, reddit, facebook, etc.