I'm not convinced of this.
I used them for RDL's, but once I shitcanned straps for good on any back stuff over a decade ago, I've never had issues. Grip caught up fast.
I think "it depends".
I never used them for the longest time. After 25 years of IT/Desk job, the carpal thing I used to laugh at, became reality.
I now use them for some back training so my grip doesnt give out first. When I get to 315 in DL, I put them on.
Rows and stuff, I'll use them. Ive been doing some kind of grip training for almost 3-decades, so my grip is good.
It's just that carpal pain can get in the way.
Those who might have a weak grip, can use straps, and then train their grip until it comes up to par.
Plus its fun and its own training genre. Thick bar stuff, pinch grip, wrist rollers, grippers, blobs, etc.
Always enjoyed grip-training stuff...