I would never use their firewalls/gateways, but their switches are pretty good for the price and their APs are decent (although tbh after 3 generations my next AP will likely be an enterprise Aruba).
That said, I still use Unifi in docker, everything is up to date, and nothing is requiring a sign-in to the cloud. Am I missing something? If it's just the firewalls, then I'm not surprised since I've never been remotely tempted to use them, but it sure isn't all of their devices.