Fake leather has a wide, wide range of quality. Polyurethane faux-leather used in many automobiles these days is considered to be superior to leather in terms of durability and longevity. Take a look at old examples of MB-Tex, which Mercedes has been making for ... 60-70 years by now.
Similarly, plenty of leather that will disintegrate and flake into trash or crack and peel, especially if not taken care of well.
Plenty of real leather seats that have done the same. I had a 10 year old real leather Volkswagen that did the same myself.
Meanwhile, I have a 11 year old Vinyl “fake leather” car with no issues, and a 8 year old car with PU pleather that looks nearly brand new. Ironically, the steering wheel is made of real leather and has started flaking in a few small corners.
I’m not sure how any of those anecdotes proves which is more durable or long lasting than the other.
Similarly, plenty of leather that will disintegrate and flake into trash or crack and peel, especially if not taken care of well.