Maybe, in some alternative universe, that could be correct but it isn't anywhere on Earth.
You can write a BSD-licensed driver as a Linux module and distribute it separately all you want - copyright law is OK with that.
The moment you insert the module into the kernel the whole thing, kernel + driver becomes a derivative work and you're forbidden from using it by the GPL - the license, not copyright... Copyright only gives the creators of the kernel the privileged power to impose that contractual restriction.
Long time ago, some BSD guys were trying to convince me that the GPL was primarily a weapon against BSD and other less restrictive licenses but I didn't believe it back then... boy, was I wrong.
You showed me how the GPL can be used for threats against the free modification of software by arguing for the addition of new, absurd powers to copyright - the opposite of what the GPL proponents are promoting it for. It's indeed a license that must be avoided at all cost.