Stolen from @vmstan
More analysis from @wiredfire:
It’s nothing to do with [difficulties in using multiple platforms]. It’s to do with the massive backlash they got on Fedi for their CEO being all Trumpy and somewhat horrible right wing. So they’ve run away because they were made to feel unwelcome on account of us not letting their BS fly.
Original screenshot is of the bio of https://mastodon.social/@protonprivacy and wasn’t a post (that confused me for a sec).
For me, the main advantage of the model is "you cannot conveniently observe everyone's activity from one place".