The screw holes in the riser PCB, unlike any circuit board meant to be held down with screws I've ever seen in my life, are bare. Instead of having some sort of protection or reinforcement, it literally looks like they power drilled their way through the board.
When I took my screws out of the case, there were flecks of dust and such in the hole and on the screws themselves. I honestly think when they manufactured these things, instead of designing a board with proper mounting, they created something that was going to be secured without screws, realized that their final case design didn't have such a thing, and just opted to punch holes in areas that wouldn't cause the final product to not function, not recognizing or maybe even ignoring the potential for shorts or fires.
Months later, I'm still waiting on my kit from NZXT, but I replaced the screws with zip ties a couple of days after this story first broke.
GN claims the problem lies with the PCIE riser while the recall only deals with changing the metal screws to plastics. And, GN noted in the video that's not enough and recommended people replace the riser.
You only need to replace the riser if you're forgetful or trying to resell the whole package, otherwise non-metal screws or zip ties would suffice.
Anyone in the market for a new GPU with these things should be looking to replace the riser anyway given that these are PCIE Gen 3 risers and not Gen 4.