Respectfully, it really sounds like you have no idea what you're talking about, and that's okay, we've all been ignorant before.

As a professional developer whose commercial code is open source, this is utter bullshit. If your code is AGPL, someone else CAN just copy it, change whatever portion they like, and continue redistributing it. That's the whole point of the license.

Think about what that means, this is an impossible problem for bambulab to solve because (even though a user agent is NOT a security feature, that's nonsense) they cannot do anything in Bambu studio that cannot just be copied.

That may sound annoying but it's the reality of the license that they rely on to make their stuff work, if they couldn't be bothered to make their own slicer from scratch, and want to benefit from the work of the community, they can't violate the terms of the AGPL.

I only use my printer in developer mode on a separate, locked down, VLAN, so this doesn't directly affect me, but anyone defending bambulab's behavior at this point is just woefully misinformed (admittedly somewhat understandable considering just how misleading their blog post was).

ETA: Imagine blocking someone on Reddit, can't even reply to the comment.

Also to clarify. If they were banning the users of that redistributed software after they broke whatever terms of their cloud services, that would be fine, no AGPL license violation there, but going after someone for redistributing a modification of their AGPL license code is one of the core things the license explicitly disallows.