Bluesky is not all of atproto, first of all. There are a bunch of apps thats don’t use any relay at all. Second, even if you aren’t on bsky’s relay, there are others, like the Blacksky relay.
I’m guessing from your constantly-incorrect capitalization of “BlueSky” that you’re not familiar with any of this even a little bit and you’re just repeating what you’ve heard from other, equally unfamiliar people.
I’m guessing from your constantly-incorrect capitalization of “BlueSky” that you’re not familiar with any of this even a little bit and you’re just repeating what you’ve heard from other, equally unfamiliar people.