TBH, I agree with OP, especially if your team has proven themselves to fail consistently in teamfights (Chasing support, not focusing ADC/APC, failing to protect ADC and leaving them to die, and doing multiple of these every single fight).
If you keep trying to support a bunch of incompetents, then you will very quickly see the red defeat screen.
In these cases, sometimes all you can do is split push to hopefully force some of them to back and cause them to break their 5 man formation to deal with you. The worst case scenario is they send 1 back so its now a 4v4 as they push, with the defending team having the advantage. In lower elo, split pushing is the only way you can win certain games and, yes, having these same incompetent idiots "?" ping spamming as you're singlehandedly the only reason they're still in the game is one of the most frustrating, tilting things in this game.
Bye!
https://s3.postimg.org/ugy4qvfoz/lblanc.png