Not convinced by the e-mail analogy rebuttal. There are plenty of small e-mail providers thriving alongside the giants. Nothing is stopping you today from paying your friendly local business or association to host a mailbox for you. Of course self-hosting e-mail is an absolute pain, but that’s because most e-mail sent is spam, the drastic blocking is just needed. Similarly if the Fediverse sees any kind of meaningful adoption, preemptively blocking small instances will be needed to crack down on spam.

I’m cautiously optimistic about Meta adopting Activitypub for their new platform. It might signal enough interest to make other smaller (and more trustworthy!) actors follow suit and set up their own platforms or Mastodon instances.