This is a feature. When I enable LAN mode I do not want Bambu to be able to control my printer.

It remains astonishing to me that this is controversial. Not everyone has the knowhow to block internet access to their printer, so having a toggle in firmware is terrific. I've verified after turning it on that it never phones home. Couldn't be happier.

It’s fully understandable to want that and exactly what I use too. It still sucks for people that did want to start their prints locally and control them over the app.