The devs were explicitly asked about both of them. They flat out said that Byakko LB3 was an unexpected but legitimate method (why have a tank LB at all if not to mitigate damage?), and they didn't really answer on the ghost thing except to say that SSDs shouldn't be a factor on it.
So, they know. We know they know. They haven't said anything is wrong with it, and haven't done anything to change it. From that, how do we leap to "it's an exploit"?