That's comepletely unnecessary. Before theorycrafting perhaps learn the problem domain.
You can print directly to these printers, even using bambu software, if you have the right firmware level and software, all from Bambu. Because they're not trustworthy you can ditch the Bambu slicer and use their proxy software to print directly to the printer from another slicer. But that's still their junk software that may autoupdate and stop allowing you to do that. So those of us who bought these things before they went off the deep end are running custom firmware with the printer blocked from accessing the internet and printing directly to them using orcaslicer.
The problem is not "no cloud".