Bluesky proves people want to be in an echo chamber. They don't want interaction with people who disagree with them. Bluesky is their new echo chamber.
I thought follow lists did that pretty well (just follow people you like). But maybe nostr needs communities or some kind of limitations on who can reply. I haven't thought about this from a technical perspective, I'm just spitballing.
I believe Nostr is eventually capable of giving every potential user exactly what they want.