If you get auto-filled, your objective isn't to get as many kills as possible - it's don't die to your lane opponent, get a kill only when you can safely get it, and don't get crammed into your tower. You often should ignore worrying so hard about CS if worrying about CS endangers you and your tower, and wait for other lanes to pull ahead and have them help you out. If you don't die to the enemy ADC, they don't get fed unless they roam.
Also, if an ADC and Support, no matter how noobish they are, doesn't know how to deal with a Blitzcrank, that's a problem of their abilities as a whole, not their skills as an ADC. Blitzcrank isn't new, and hasn't been new for at least 8 years. People know how to avoid getting hooked, and if you're not using minions as little meat shields, then something more pressing is wrong. There's absolutely no excuse for people not knowing how to hide behind minions and avoid Blitz.