Every opponent's champ would take skill if...
...you knew how to fucking play...
Back in my day we had a game called Mario, you go left, you go right, you do whatever it wasn't that damn hard, actually it was easy as can be until the opponents became more complicated. If you want your opponent to play a champ that takes more skill then make their champ take more skill. It doesn't matter how easy azir or zed is if you're just some idiot who's gonna make the same basic level mistake over and over again.
"Herpderp! I sit under my tower doing nothing while she's weak and annie still outduels me at level 6!"
"OMG fizz can towerdive me, guess I better just stay under tower and watch him spend 10 minutes trying to push a wave while camper udyr bear slaps my jungler silly"
"ermagerd! garen and volibear shouldn't be allowed to kill my carry while I faceplant on vayne who's 1000 units away with nothing but tank items on. So unfair these champs take no skill!"