I’m pretty sure you can revert to prior firmware on all but one release (the one closing a security issue).
Bambu is actually going to allow 3rd party firmware. This is unheard of in the industry. It can simply 100% break the entire machine, which Bambu could be held accountable for. But they are still going to allow it.
The only one stating Panda Touch might be blocked is… Panda Touch. And correctly so. But keep in mind, Bambu has made no statement that they will be blocking the Panda Touch. Bambu may very well make changes to the msq calls that create issues for the Panda Touch but that is really something that both companies need to work out. Certainly Bambu has shown that they are 100% open to working with companies. Heck, they will even work with a group of people who are circumventing Bambu’s firmware.
Bambu printers are working the same as they did when you were recommending them to people.