let me debunk you
stop doubling down on the fact that Shaco has untargetability in stealth, he has none. He can be hit with abilities, not target ones because he's not revealed. Untargetability by LoL Wiki:
Fizz is being untargetable while using Playful Playful.
Untargetability refers to units in a state where they are no longer valid targets for auras (e.g. Sunfire Cape item Sunfire Cape), unit-targeted (e.g. Disintegrate Disintegrate), auto-targeted (e.g. Death Lotus Death Lotus), direction-targeted (e.g. Mystic Shot Mystic Shot) and ground-targeted effects (e.g. Pillar of Flame Pillar of Flame), including attacks, abilities, items and summoner spells. Becoming untargetable is not a form of invulnerability, and units will still suffer the effects of active applied damage over times (e.g. Ignite Ignite), delayed detonations (e.g. Time Bomb Time Bomb) and tethers (e.g. Drain Drain).
The act of becoming untargetable will also interrupt any effects that have already acquired the unit as a target (e.g. an oncoming basic attack will fizzle) as well as causing AI-controlled units (e.g. turrets and minions) to acquire a new target (also known as "dropping aggro").
The telegraph from KarthusSquare Karthus' Requiem Requiem will be placed on untargetable enemies, although the damage itself is classified as auto-targeted effect that occurs at the end of the channel time.
**To date, Realm Warp Realm Warp and Wish Wish are the only abilities that can target an untargetable unit. **
he has below 54% winrate in leagues below plat, 53% at gold and 59% at masters (keep in mind the amount of players in masters, while in challenger he has winrate of 51%) in some elos he has 50% or below winrate.
Shaco has been getting nerfed alot of patches, with indirect nerfs yet we keep the winrate on over 52% for past few months. No matter how hard we get hit with nerfs.
"Shaco's kit is just way too strong and offers too much" sure, thats why it has no damage in kit.
Shaco's deceive isn't a better version of Ezreal's arcane shift, Arcane shift hits invisible targets, has bigger range, a lilttle bit longer cast, but it gets reduced with each skillshot hit, also it proc's new Ez W (unless you want to argue that Ezreal is an assassin and needs invisibility) if we remove invisibility, it's just a small blink.
Stealth traps aren't too long, infact they're 60 seconds, and todays wards are 120. Jhin's traps are longer. CC isn't strong, look at other Fear abilities, Fiddlesticks and Nocturne use point and click fear, with even more reliable usage. Fiddle's fear is longer and has no cast time, Nocturne has 2 seconds before fearing the enemy, but he can jsut stick to the target and guarantee the fear. Shaco's box fears in AoE, but it arms for 2 seconds. You can do alot in those 2 seconds (destroy, walk away, use red trinket etc.)
They don't have too much hp, infact they have 550 at level 18, without any armor, single aa destroys it.
the fact that he can place them while stealthed isn't bullshit, since it reveals shaco for a split second which gives away his position. 
Oracle lens, reveals Shaco's boxes and makes them active, which leads to their 5 second lifespan.
You know who has less counterplay? the same Ezreal you just said, for me it's impossible to assassinate a guy with Tabis, GA and Iceborn Gauntlet because he has 170+ Armor casually. While still maintaing 600 damage per Q and Auto, with a safe ass range.
(during R) 
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(instant cast, compared to Shaco's cast time, although it needs enemy champion near), 
(instant cast during R), 
(E which is not even an ultimate, and its a gapcloser too), 
instant R, and i can go on. If you even wan Shaco's "vanish" (different form of untargetability) then look at 
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