Although I have full confidence that Google will reinstate Matrix (would be too crazy not to), this is very depressing. Someone in the thread piped up about PWAs, to which someone more sober replied:
Don't count on PWAs. Once these free speech platforms start embracing PWAs and they become super popular, Chrome and Safari will simply censor them directly. When you will try to visit these PWAs, you will get a message that says "this website contains hate speech and has been blacklisted as it doesn't respect our terms of services for a safe and friendly browsing experience we thrive to offer our users".
Any browser that allows accessing these PWAs will be banned from the app/play store. Let's not kid ourselves this isn't what's coming next.
I don't know what the future holds for tools guaranteeing unregulated free speech. I've heard some people say that completely unmoderated spaces die out on their own, because they get hijacked by trolls and all conversations become unmanageable; but companies and governments sure don't allow such spaces to run their natural course and reach their natural death.