Russian, chinese,usa and uk carrier usage targets and strategies completly different.
Chinese carriers needs to protect the trade and ballistic subs in the Chinese sea, contested area with lot of dangers, and minimal control from China over the seabed and areas.
Anti subs aircrafts and enemy subs can by in the sea, so they need airpower.
Russia, other hand, most likelly just finished the installation of nuclear reactor poweered acoustic sensor network in the arctic ocean.
Combine it with long range torpedo/missile/torpedo systems from diesel subs and long range drones these systems makes the Kuz purposeless.
I don't want to comment on the purpose USA/UK carriers, because I can't find a reason for they existence beyond corruption .