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)<p>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.