[2022] More jungle mains are gonna be alienated by forcing Jax out of the jungle.

This is exactly it. These nerfs have very little to do with Icons but rather Jax's impact (in solo que) as a jungler.

Basically Jax was in a fine spot in Baron lane but crazy good as a jungler, we tried several times to nerf his jungle without impacting his Baron and couldn't find anything that went far enough. Thus we are trying this passive nerf. Ideally we want Jax to function in both positions (but we don't like the afk farming Jax play style) but that has been tricky to maintain, so while we expect this to be a rather large nerf to Jungle Jax, he needed it. This is the best option to maintain his Baron Lane, and bring Jungle to a much more reasonable level.

Getting half the stacks from monsters is how it has been, it ends up not mattering because he can keep his stacks between camps. It also makes the UI tracking look very goofy with how many segments you need.

It's something we talked about doing, but it gets really clunky to have a different drop off rates depending on what you attacked. They would also have to drop off incredibly fast, and would more likely than not keep him as a god tier jungler for skilled Jax players while only nerfing him for the rest of the player base (when he needed nerfs at all elos, but especially higher elos).

We do expect this to hurt his first clear a bit, but after getting his ultimate he turns out fine. This is not going to dumpster him as many people fear, and in a world where it hits a bit to hard we can look at giving him some jungle modifiers. But again even a massive drop in winrate (like 5%+) would mean he is still fine or even still strong.

Jax doesn't deal much damage with abilities, and it all comes from his basic attacks. He would need to DRASTICALLY reduce his basic attack damage to monsters and that would end up feeling much worse.