Literally every champion in the game sounds broken and unfun if you phrase it like that. Omg Vel'Koz has such a long range spammable skill-shot that splits in two at max range so you can get even more range and also restores mana if it kills a target! He has an AoE knock up! His ult deals over 1k AoE TRUE DAMAGE late game!!
Sure Yasuo Q counts as an auto attack, but it's range is extremely short and unless he's directly on top of you, you're probably not getting hit by it. Sure he gets double crit chance, but Tryndamere gets crit chance from his passive and it does no less damage than a regular champion. His dash requires a target and he can't dash to the same target for prolonged periods of time.
Sure he'd probably still be quite frustrating, but would he be anymore so than most champions if you really think about it?