Matrix is a shit protocol with shit clients that barely works that's a thousandfold more complex than all of nostr combined. Telegram groups can even be read-restricted based on your geographic location. Same probably applies to Whatsapp - no idea. Mailinglists are are either centralized as fuck or ...

TBH all of the alternatives you cited are just as easily targeted by “law”. Matrix can be made to not federate with certain servers (just like Mastodon), Telegram does client-side takedowns of certain content on app store versions of the app, WhatsApp probably does the same thing because very de...