The ribbon was contentious but most people are familiar with it and it has advantages like taskcentricity and less clutter. LibreOffice has an experimental ribbon that I think should be worked on, mainstreamed and set during installation or in the settings.
UX in other areas should be improved. Lots of little annoyances add up for new users and can break their opinions. It's not hard to look over the UI and see things which have no business being there, or should only appear in certain contexts, or could be implemented in better ways. I think the project should get some MS Office volunteers into a lab and ask them to do things and observe their problems. I'd have power Word, Excel, Powerpoint users come in and do non-trivial things they normally do and see where they trip up or even if they can do what they need.
I've set my P1S to print through LAN and it works fine. I don't want or need to use an app to control the printer so I'm not concerned by that loss of functionality. IMO printing via LAN makes more sense anyway for most users. Having to upload some multiple megabyte file to the cloud just to download it back down to a machine you're sitting beside makes no sense.
I like Bambulabs hardware but I don't get their obsession with locking down the firmware. Ultimately it's just a 3d printer that takes an STL and prints it. There is very limited IP in a firmware that needs protection or that couldn't be figured out by monitoring the I2C or whatever protocol it uses to send instructions to various systems like AMS, camera, printer board etc. Somebody could reverse engineer it already and all this controversy just makes it more likely that someone will.