Some mobs can be skinned by more than one person in patch 9.2
Skinners, and by connection Leatherworkers, have a gainful source of income in Shadowlands -- the Legendary -- and to make these, a lot of Callous Hide is needed.
Breakfast Topic: Resource gathering professions are awful
While I'm on the record as thinking the Garrison Mine and Herb Gardens ended up separating players from the world, the more I think about it the more I realize that I hate Mining, Skinning, and Herbalism.
How to make a million gold in World of Warcraft