Yes I meant the on-site one developed by Reddit, but agreed that the centralized nature lends itself towards searching by Google.

Although the other way opens up a huge can of worms since every large, general-purpose instance will - due to the nature of how the ActivityPub protocol works - have basically all of the content of the entire Threadiverse. Or as near to that as it works for a first approximation anyway, e.g. someone deciding to index all content appearing on "Lemmy.World" would get all the memes, movie discussions, etc., missing chiefly things like piracy and anarchy and other things that LW has decided to ban. It won't be "correct" in the sense of attribution to the OP, but once someone found their way to the content housed on LW they are but a click away from getting to its original source anyway. So from that standpoint, Google indexing I would naively have thought would not be all that difficult? Except for the increasingly niche content that isn't federated with the largest instances, which is perhaps desirable anyway to not expose mainstream normies to content calling for e.g. actual murder in response to world events (such as occurs routinely on e.g. Hexbear).

A safer, sanitized version of the Threadiverse that is searchable by anyone works to all of our advantage, I would believe?