I don’t like that idea, personally. Then I can’t become a cybertree anymore. Becoming a cybertree is my favorite way to do things if so possible.
I can understand that way of thinking, but completely blocking off that as an option seems excessive unless you have a large amount of CBMs. If it’s just a few, I see no reason why you can’t have both.
Having a system like that but no so aggressive I’d like.
CBMs are made for humans, so you can install them on a mutant, but depending on mutations you might start running into incompatibilities which reduce the effectiveness of that CBM or maybe the mutations. With possible malfunctions as well.
You might also be able to get certain CBMs or mutations that reduce compatibility issues.
This way, you can become a cybertree, but it still has more balance.