I/O is no longer the bottleneck
It's still very bizarre to me to see people completely write off spinning platter drives as 'old tech'.
They're still used everywhere! (At least in my world)We have all of my teams data on an array of 18tb drives for a 100TB raid10 setup, and a NAS at home doing the same, etc. 
Even some of our OS drives at work are 7200rpm drives - and we're a computational lab.
Why is everyone so intent that these effectively no longer exist?  The cost for a decent amount of space with NVME drives is just far too astronomical. We're not all millionaires.