I can't help but agree with this. I can't say that I really care however. I enjoy community and conversation. That's my hopes for this place. Ramming attention grabbing messages (the reason I disliked twitter so much) allows for peoples boring thoughts to fill up my feed. I want to have chats, help people, network. I'd like to think that's all I have ever done and wanted from internet based communication.
Pushback: even with "centralized" relays I don't have trouble finding things to chat with people about, randos or follows that share their interests. What I can say, is that essentially no web clients respect nip-07 relay requests, and my vault extension is primarily what I use to "swap" accounts. I just don't think aggressive relay swapping is yet well supported by clients, or likely will be by any popular one.
I think lots of us have the idea of a single distributed network, not divided into "instances' by private relays. Dunno.