NVIDIA Confirms 580 Linux Driver Is The Last For Maxwell (GTX 750 and GTX 900 series) / Pascal (GTX 1000 series) / Volta (TITAN V / Quadro GV10)
(www.phoronix.com)
That's a sober take. I am affected running a 1070. But I don't expect 10 years of drivers for an OS that makes out at most a few percent of the total.
If we look at steam survey. The 1070 is at like 0.78% of all Linux installs. While Linux as a whole is at 2.69%.
So less that 1% of less that 3%. Yeah, I would also kill support for that nieche