Mine are only 25k hours or so, around 3 years. My prior set of disks had a single failure at 6 years but I replaced them all and went to bigger capacity. There is also the power saving aspect of going down to 2 drives as well, it definitely saves some power not spinning 4 extra drives all the time.
What I don’t understand is why Intel was willing to lie so extensively. They knew they were going to get found out in a matter of months and that would do enormous damage to their brand. After the failures of 13th and 14th gen processors they weren’t likely to be believed anyway. It makes no sense.