Do Mages take skill to play?

Lets take for example. He is all skill shots but as a champ, there is no interesting or hard mechanic to learn apart from that u gotta hit the skill shots. Assuming we disregard that as a general skill, his and essentially all mages have cds of around 5,4 or 3 seconds mid to late game which means its especially spamming burst from the other side of the screen. Even if you don`t hit the skill shots you are way too far to reach for their team and just send another 1 in 5 seconds which will 1 shot an ADC while having cc to cope with most standard assassins. While this isnt a complaint about mages being too OP (although I would love to do that), do mages actually take a lot of skill to play? (Note I have played them before and was just spamming abilities and barely dying so this isn't of salt from the enemy team.)

Edit: This discussion is actually humorous. Ty for all the people that just gave an honest opinion but you think after writing about not being salty about mages in my games as well as straight up admitting that mages are not OP just wondering about the skill level you wont get comments accusing you of being salty and thinking mages are op.[zombie-brand-mindblown]

Edit #2: Xerath is just an example of a typical mage, I`m not talking about him as a champion but rather the general class and their kit.