Personally I have focused on fast SSD storage and utilized the vast, cheap, slow storage available with mechanical drives for backup.
At the end of the day, if an SSD fails, you're effectively just screwed. If a mechanical drive fails, there is some possibility that the data is recoverable. But moreover, mechanical storage is so cheap by volume that you can just have redundant backup and never worry about it, really.
You can have all three of those, but you won't get great performance. The Samsung QVO SATA drives are a great example. I wouldn't use those for an OS drive but they're fantastic for NAS or media use.
So not fast. Which means the original still holds true.
Oh I agree with your post, but I was responding to Valmond who used different criteria.