Signing a contract is easy; revoking it is harder. If you entered the program (by signing a contract) without reading the guidelines, that’s on you — not on Bambu Lab.
Additionally, you gained visibility by joining, which you likely wouldn’t have achieved otherwise. So, in my view, it’s fair for Bambu Lab to retract all points, not just the exclusive ones.
I’m not sure what models you used to enter the program, but it’s clear from the guidelines that some of them don’t meet the standards.