Also, I don’t see locking data from search engines as a bad thing. The fediverse isn’t search engine searchable either

The fediverse not being searchable is one of the biggest flaws with it, and make it similarly ephemeral to Discord, except its actually worse because the sizes of communities are just in that goldilocks area of awfulness where there are echo chambers, and people are rude and toxic. Whatsmore, availability due to the small size is relatively mediocre.