the keyword being _phone_, not smartphone. Bambulab too will let you print from SD card without logging in their infra, they are just locking the rest of the ecosystem. 1 to 1 analogy.
It's still a smartphone - with web browsing, mail and everything else what's available out-of-the-box. And Bambu will cut out even local network access and, as they stated in "Terms of Use", can lock print jobs until you update firmware. Far from 1:1 analogy...
They are actually adding in LAN modes (standard and developer) with these changes so I'm not sure what you're talking about with them cutting out local network access. Neither will require auth.