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

thanks! i checked out after chirospasm recommended in the other comment and it actually has most of these things, truly awesome to be able to also browse posts from other platforms in Fediverse and Bluesky from it too, i might give a try to selfhost it for me and my friends

thanks, I’ll check it out