I'm finding alternatives for Discord/Twitter/Reddit very easily but still on the search for a Facebook alternative, anyone who didn't quit Facebook yet know how shitty their feed is now bloated with things not related to your friends but it was good before, it wasn't just about "posting", things like being able to create pages, join communities/groups (private and public), events calendar, optional geotagging, tagging people on photos
i dont think you understood OP's question and underlying points. the point of the question is about getting a working link out of a closed instance link ending up on search results, yes you could do what you just said but OP is talking about a faster and easier way to simplify that process for search engines to give back that working link, at least thats what i understood, plus selfhosting just a search engine of threadiverse/forumverse like Sepia Search would be less resource demanding than probably hosting a whole Lemmy/PieFed instance just for that purpose, OP is suggesting a different approach or moreso wondering if its already a thing and just isnt aware of the existence of one