I only learned about this last night, but I haven't heard anyone make any of the "false claims" that were mentioned. The actual claims were that bambu can and will change functionality of their product after you purchase it via firmware and software changes, as per their EULA, which was demonstrated with the latest firmware update.
I've also heard that you can't even set this thing up without downloading and running their own special software, and "better security" meant "removing all third party support."
I was going to get one of these, because a few friends were very enthusiastic about bambu labs' products. But... I'll probably get another creality printer.