[FreeKill]

You absolutely can. The GeForce Experience is not necessary for anything. You can download drivers and install them without having to login to anything. GeForce Experience is just for the convenience of automation and for the extra tools it brings with it...

[Havoc]

Forcing login for a simple driver update is borderline malicious and you know it.

Yes there are work arounds, but that doesn't excuse this kind of behavior in what I'd imagine is their main update delivery mechanism.