I've seen a textile jacket that was "tested". They don't "wear" as well as leather, but with the armor and the double layers used now, they are up to the task on the street.
You would not want to slide 50 yards down the macadam at 100 mph like a road racer may when wearing textile, it will actually melt. That is why you only see leather on road racers.
The other plus to leather over textile is it has a random grain to it. When proper motorcycle thickness, it will not tear and is hard to abraid through it. Fabrics have a grain or pattern of weave and can tear. But again, we are now wearing motorcycle specific designed textiles. Back in the 80s and before, the textiles were common outer wear.
I only do textiles because of the washability of it and that it essentially needs no attention. Leather can and will dry out, requiring saddle soaping to clean and some kind of oil treatment to remain supple and wearable. Leather is also dried out by exposure to rain.
KLX650C, Zephyr 550
SR500, Bultaco Sherpa T