In Youtuber’s hand-folding test (live stream), the Razr Plus broke after 126,364 folds (hinge gave up after ~44k folds) while the Z Flip survived 273,316 folds (but lost ability to stay fully open after 223,000 folds) and is still going right now in the live stream.
EDIT: the Z Flip is now at 275,203 277,350 298,500 300k folds!
Yep in a subsequent video he does address that, basically the 44k folds (ie the point at which the hinge broke) for the Razr Plus correspond to ~2 years if you assume that you open & close it 60 times a day, over a 1 year if it’s 90-100 times a day.