What's the point of playing tanks when Kayn has an aoe knockup?
Wanna burst squishies? Play Kayn. Wanna burst tanks? Play Kayn. Need hard cc? Yea got that too. Want tons of mobility? Need good waveclear in the jg? Got that too. Want healing? Oh yea we got that too. And he functions great as a bruiser as well. No need to go full glass cannon even though you're playing a SQUISHY ASSASSIN. There's literally no point in playing a true tank (or any other bruiser) when this champ exists.