You think the person I replied to is persuadable?

And, if your distro had you enroll a MOK key and failed to bless all your kernel modules, FOSS or not, then it's still broken. That was also my experience the last time I tried, with the module(s) required to get a Coral TPU going. There existed a hook script that was supposed to do the needful but it wasn't working on that module and I couldn't make sense of it.

I don't think either of you are persuadable, actually.

I didn't have to enroll anything; I assume they are signed by MS. I'm pretty sure nvidia drivers are dkms, and I think they have to be for legal reasons (off the top of my head and IANAL so grain of salt) so I don't view that as a fault because they can't do otherwise.