Do something about Renekton's animation canceling

It's just ridiculous that someone can 100-0 me in matter of seconds just by getting to touch me. This has been going on for too long and I'm pretty sure that staff at Riot knows this needs to be fixed not only on Renekton but many other champs as well. It's broken in all aspects of the game. It cannot be counterplayed, no outplay potential, and in late game even if enemy Renekton is behind he is still able to oneshot the one he gets near to (except for tanks obviously). If you call this skill like in Riven's case maybe, it's not. Anyone can do it and it's pretty easy to just delete someone by getting near him. I personally don't know any champions who're able to do this except the ones with stupid animation canceling "mechanic".

What I propose is a rework to his animation cancels OR reduction of damage because even when he goes tanky, he's still able to burst someone. In addition to all this, his sustain in teamfights is HUGE, as well as his survivability with heals from Q. His E makes things worse by having 2 dashes and on top of that a stun that lasts long enough to kill an adc at least 3 times lol.

Renekton is basically a hypertank-assassin-bruiser lane bully.

Again I understand there are a lot of Renekton mains out there but it's way too frustrating that one champion can have so many pros compared to others and the whole idea of getting 100-0 in less than a second is way too overpowered in my opinion.