[ilyt]

Open protocols don't make for open platforms. Mastodon is "open" yet big server admins are free to block anyone else they don't want, going back to the closed garden model. It is for good reason of course, there always be bad actors, but open or not it's all to easy for organization to use same tools to further their own goals

[cdmckay]

Couldn't you make the same argument about email? It's an open protocol but anyone can block you.

Even though that's the case, I think email is much more open than WhatsApp or Signal, and a big part of that is the fact that it's a federated open protocol.