I do think it's worthwhile to see the areas Threads has improved on the Fediverse but it's the same old stuff people always complain about - search functionality, QRTs, onboarding, difficulty finding content/friends if you're a new user.
Having said that, Threads also reinforces the frequent argument that the Fediverse doesn't have to be The Mainstream Platform to be successful. It reminds me of Twitter currently - no substance or depth, just hucksters. In other words, about what I expected.