Does anyone else feel that Morde's damage output with his insane survialbility are over the top?

Playing against him as AD Lane shaco, it was infuriating to watch as Morde enables god mode with just a press of his R+Ignite in a team fight, and would eventually ace our whole team

Thats what a range carry is for sir

"Lane AD"
and "Shaco
there's your problem

I read "AD Lane Shaco" and immedietly understood that your problem is you lack burst and sustain in order to properly counter a morde in lane. Thus he was able to easily farm up and always have a gold advantage over you. Since in order for him to have reasonable damage and survivability his build is extremely costly.

you played shaco, that's your own fault.

Though honestly with spell vamp morde is over the top now compared to before, that's why they renerfed his passive, right?

So, you only consider Survivability and Damage output of a Champion and conclude that champion is OP.
Ever heard of forms and quantity of CCs, pushing/split-push/backdoor ability, Tanking power, item/farming dependency, Team comp synergy? There are so many parameters to concern and you only pick the 2 that Mordekaiser is no doubt has edge (to a certain extent).
You have much more to learn, bro.

Morde has an apparent huge survivabilty. But nukes kills him quickly if he builds AP. He's only good if the teamfight lasts for a while.