Could be...
It could be that those drives run hot because the bearings are on the process of going out.
So because the drive is at the tail end of working right because the bearings no longer work at 100%, it heats up, causing the drive to malfunction even more.
I think a lot of processes like this are a viscous cycle.
But if it gives them insight into drive failure predictability, I think it would be worth tracking.
Myself, I have smartd track drive failure notices, and can start to plan on replacement when I have say more than x # of bad sectors or so. Seems to work for me.