remember when riot removed the attack speed slow on lee sin E because he could also slow people?

Those are two different things, first thing lee was slowing them and lowering AS at the same time, while irelia is one or the other and two the lowered AS helped lee survive in the jungle better, so the nerf wasn't directly him lowering AS on champs but to lower his sustain in the jungle

Remember when Riot said they'll remove hard snowballing junglers? And instead they removed Feast or famine and broke assassins? Remember when Riot said they won't implement premade queue of 3-5 man within Solo/Duo queue because of how unfair it posed stacking advantages before match even began AND said how it sets up easily for non-premade players to get bullied and hazed? Remember when Riot said they will take a stance against boosters and scripters? Remember when Riot said they will balance?

If you're hung up on everything Riot said, then you're going to have a bad life. Those guys are more indecisive and changes their stance than the craziest and most emotionally unstable chick I've gotten with.

I don't like her E, but that's a stupid reason to remove the stun.

It's supposed to slow if she has more health than them and supposed to stun when she has less health.

Course health percentages mean very little when it can stun at equal and she has sustain to bring her health up higher than yours before stunning you. I'm sorry but I just don't find her stun very fair since it just drastically turns the fight around in her favor.

My inherent hatred aside, you can't justify removing it on that principle.