@Blaze no problem, friend.

I always worry if my long winded answers make sense to neurotypical people as I'm ADHD and slightly autistic.😅

So I hope it does make sense, at least even partially.

Overall, they're mostly centralized because there's *very* few relays and they're required infrastructure, but decentralized in other ways, which may or may not matter in the bigger picture because of this previous information.