User blog comment:TheNotUsername/The reason why people hate some champions/@comment-9048637-20140812055748/@comment-9048637-20140813135330

I'm not going to deny that Blitzcrank's kit gels together annoyingly well, but I think you underestimate just how powerful merely displacing a single member of the enemy team by such a large distance into the middle of your own team is, especially when that person is squishy. The CC that follows it makes the death sentence a certainty, but it would still be rather likely even if Blitz had nothing but Rocket Grab, particularly in teamfight situations rather than laning. After all, that's why a good Insec kick is so feared. It's the same principle, except, whatever other problems Lee Sin has (and I would argue he has many, but that's a different story), the Insec manœuvre at least requires more effort than simply hitting a linear skillshot.

Anyway, point is, none of Blitz's other abilities are problematic by themselves, or even in conjunction with each other. An AS/MS boost? Fine. A single-target knock-up at melee range? Fine. An AoE silence? Fine, given that it's an ult. It's Rocket Grab that makes any of it problematic, and I would argue that even without all of them, Rocket Grab would still be problematic, just a bit less so.