Can Lemmy posts be indexed by Google or other search engines?

https://lemmy.world/post/929048

Yes

Would this be corrected naturally by people using feddit as a search term more or does google have to manually patch this things?
I guess, but it's highly unlikely that "vlemmy.net" or "feddit.de" will be more searched than Reddit.com in the next time
It will be corrected over time, I presume automatically. I was one of the first people with a Steam Deck and when I searched for things Google would "helpfully" autocorrect to StreamDeck. But eventually Google figured it out.