This would obviously be good for promoting Lemmy which I’m 100% all for.
But from a privacy point of view, I also feel mods should be able to stop indexing or choose which engines can index for their specific communities and also users at a user should be able to control it. I understand that engines could ignore this, but I doubt the big ones would…
I think I read that individual instances already can choose whether to be indexed or not, I could be wrong there