Unless Valve are going to do some work to enable that and support a hardware backed chain of trust for drivers that's not going to happen.
(I think it should happen but that's not the same as that it will.)
(I think it should happen but that's not the same as that it will.)
I just want a more open OS.
I don't mind if it requires running a vendor signed boot, kernel and driver chain, I'd be using those same vendor chains anyway for non upstreamed hardware most likely.