Earlier quoted context omitted.
The UDM, UDM Pro, and I think _all_ newer controller software require cloud login at some point in the process.
It's definitely not all the new controllers, although with the UDM line you might be right. I think there's a huge intersection between people who would buy those specific devices and people who are perfectly happy to have remote access to their control plane in the cloud.
So the only remaining 'local only' from start to finish is for self-hosted I guess.