Comment by kazinator

You're not actually telling a modern printer: "step this motor so many times to move some assembly so far this way", or "turn on so much current in such and such circuit" or whatever. The driver doesn't have enough responsibility for such things to be able to break anything.

A printer driver is something like a protocol converter. Roughly speaking, it binds some printing API's in the some kind of printer framework or service on the host to the right language (which may have vendor-specific nuances even if it is some kind of standard0.