PBCN is breakable clone. Why we should make it unbreakable by BOMB? I see no reason.
That is one possible interpretation, yes. That doesn't change the fact that making something that has breakable in its description immune to BOMB makes absolutely no sense.
Edit: A suggestion is more likely to be taken seriously if you support it with reasons. I'd say you should concentrate on finding a reason instead of trying to prove those who have a reason against your change wrong.