His E no longer grants true sight, he now actually has to use a little bit of skill(land Q) to completely counter Akali's only defensive ability.
Lee is a bit of a tilter to me. I've been an Akali main since early S5 and throughout that time, not only could he reveal akali by simply walking to her shroud and pressing E for the AoE true sight, but any laner could counter her by buying a 75g pink ward. I'm really happy they updated stealth and nerfed lee E because those were really unhealthy how hard they countered akali.
Plus, even with the stealth on W, she has a lot more counterplay than pre rework. She still has a large number of counters, especially in mid, plus unless she's already fed and snowballing she needs multiple rotations of her spells to kill a target.
Which is why her best combo is aa a minion so second proc on passive is active > Q > Wait for Q CD > ult > aa to proc mark > Q > aa to proc second mark. then throw an E in there once or twice xD