You listed only positives for Email and only negatives for Github etc. but you implicitly made the claim that decentralization and freedom are more valuable than all of slack and Github's features combined. Or are you saying that the value of everything except your "what I value" list is zero, so all of github/slack's objectively useful features are weighted to zero in the calculation?
> you implicitly made the claim that decentralization and freedom are more valuable than all of slack and Github's features combined.
I can't speak for others here, but personally I treat freedom as my first priority: it doesn't matter what features a platform offers if it doesn't offer freedom, because I will not use it if it doesn't offer freedom, therefore I'll never see any of those purported features.
