To begin with, the FUNDS are cut, and the cartoons produced today are cheaper due to lower ratings and toy sales.
The digital method is in many ways WORSE than the older methods (not in everything mind you, backgrounds today are way better), most of the modern methods exist to CUT THE COST.
Also you are being again ignorant. If you want to compare actual skill of the animators, you should look at their PERSONAL work in hand draw animation - not the shit on tv. There are plenty online.
So basicaly imagine that Chef B has modern equipament but barely any ingredients or eletricity to use the equipament to its potential.
Or do you forgot that on the end of 80s and beghining of 90s there was a giant boom in both funds and attention given to animation?