I've been here a while, sporadically checking and posting, but my impression stands: the anything-but-obvious path to using #nostr both on desktop and mobile, and the lack of a quick and seamless setup and onboarding for any kind of person with near-zero foreknowledge is what I think the greatest entry barrier for most people. Compared to this, Fedi is a cakewalk (and it always felt that way to me, but apparently not to most people).