The addition of pre-faded "whiskers" to jeans has been a thing for years.
I prefer to buy dark or medium blue denim without whiskers or faded areas on the upper thigh and knees and as I keep my jeans for years, they will develop their own worn creases and faded areas.
The jeans you have linked to are cut quite loose around the upper thigh (at least on the model). If these had not got pre-faded "whiskers" I don't think they would develop whiskers to that extent as they would not be tight enough. But they might fit tighter on non models.
Personally, I think whiskers look better on narrower cut jeans - straight or skinny. But if you like them, keep them.