They did? I have an AP and I keep the old version of their admin app on an old computer, but when i tried to install something newer it started some crap with a cloud login so I gave up.
Did they revert it? You can really use an AP with recent firmware now without connecting in any shape or form to Ubiquity servers?
Although it's not covered in the basic setup, I'm fairly sure you can set up your own controller locally and set the adopt URL on the AP (via ssh) to match. This process requires no internet beyond downloading the controller software (they maintain a .deb and provide source).
I think initial login is via your UI.com account, and then it's very easy to disable cloud login and create local-only admin account, as well as completely disable remote access via unifi.ui.com.
I must say this is a bit of an extreme/maximalist position to take - I agree being local only by default, or having the option to choose during setup would be better, but the option is there.