Seems like a solvable problem though. We have a list of federated servers inately built into activitypub, right? Just need to tag results from those servers as being linked to a “lemmy” keyword search.
I’m sure I’m oversimplifying it, but all the pieces are there, just need search engines to be smart about how they index. Since there are a couple of federation based models that would be good to index, not just lemmy, it would probably behoove them to figure it out.