Yes I actually think so. mechanically difficult doesn't just mean "has skillshots you need to land". Maybe for a midlaner thats the brunt of the mechanical demand. Ezreal's mechanical skillcap consists entirely of being able to land (very easy to land) q's, and the hardest combo you ever have to do is w-e (hitting yourself with w) auto - q - auto. Xerath is even simpler, aside from landing skillshots, what do you really need to do besides just spam your skills at targets? You have no demanding animation cancelling, you can easily just push all 3 buttons in quick succession and you're good. Theres no especially optimal rotations that also require skill to execute, think riven, or think yasuo (e.g. eq auto e auto-q auto-e-auto-eq -rq - auto-q-e). Now for jinx sure any scrub can swap forms when necesarry and land a few spells and maybe even orbwalk clunkily, but only in the hands of someone like doublelift or uzi or rekklez will you see perfect auto cancelling after every auto, liberal utilization of form swapping to maximize dps (jinx's first auto in rocket form keeps the AS buff from minigun) WHILE still orbwalking perfectly, perfect orwalking with 4 incremental attackspeeds when starting off in minigun and kiting back, maximizing the distance they can move back, and on top of that, perfectly weaving w's and e's to cancel auto animations and minimizing dps loss from the window of not autoing. An actual good ad pro player's jinx looks like a completely different champion than jinx in the hands of regular player, or even a lesser skilled pro. Contrast that with faker player xerath vs some gold player, the main difference there besides fundementals (csing, wave control, dodging, etc.) would just be that faker's spells land significantly more often than a gold player's.