“Nikon DX lens selection: 4 Primes, one f2.8 standard zoom and two wide zooms (all other are kit or super zoom lenses)”
Guess what, you can use all the FF Nikkors you want with DX cameras.
“This segment will die next year. Full frames are almost hitting the magic $999 mark”
Hmm, I have an FF and a DX body. Not planning on retiring my D5300 any soon. When you want to travel light, my D750 + 14-24 + 24-70 + 70-200 and/or half a dozen primes isn’t exactly ideal… Not to mention that when you’re taking tele shots, you definitely want the DX advantage. So, there is a definite advantage in using both DX and FF (I guess it’s what they call “best of both worlds”… 😉 )
So, no, I don’t believe DX will disappear any soon.

Started out doing photography at the age of 6 using an uncle's old 1940 kodak brownie box camera. At 15 years of age, I decided to buy my very own 1975 Praktica SLR camera. I now shoot with a Nikon D850. I do unpaid TFP and commercial paid work.