Yes, they care.
I care about a lot of things that you don't but should.
There are an infinite number of things you should care about, but don't, just as there are for me.
If I was a developer and built a custom service like nostr.build I would care alot about that server.
They are right to care about their service.
If I had invested more than 30 seconds of setup time for my relay or if I ran it professionally or offered any kind of guarantees about it I would care. But for the 30 seconds of invested time, I don't have the time or inclination to care.
I care a lot about trying to convince you I don't care, however 😂