He does that purposely for this exact reason.
...the exact reason of encouraging people to think he's not worth listening to? That seems counter intuitive.
On the one hand, yeah, ADCs can be total douchebags.
On the other hand, so can everyone else.
I've seen everything he described on every single role in games of League and I'd say that, on the whole, I see it most often on mid players with ADCs a distant second. This guy (Sky?) just comes off sounding as whiny as the people he's bitching about.