Motorola does extensive testing to make sure that our phones can withstand everyday use and last for years. Razr went through this testing in machines built specifically to simulate real-life use and we are confident in its durability.
And well, CNET robot is different, it doesn't completely close the phone, because it's an adaption of the same robot used to test Samsung Fold.
So the RAZR 2020 died soon 'cause the machine wasn't able to emulate properly real life conditions (open completely and close completely).
Furthermore there's a difference to open and close N times the fold in a 4 - 10 hours set or doing the same thing in months or years. The first thing is more stressful.