I wanna main Galio but..

I suggest you look up the Singed support case again and read why he was banned. Hint: it wasn't because of an unconventional pick.

Picking Singed Support? Fine.

Not listening to team's decision, and still decides to playing him by ditching his ADC and go "counter" the enemy jungler's jungle for 5+ minutes? Not fine.

{quoted}

it is.

RIOT said it themselves, look up singed support smite or nunu support.

That wasn't because of the pick. It was because they were getting reported like every game and it was upsetting all their teammates or failure to communicate or whatever.

And this is coming from someone who plays trash in ranked, why aren't I banned yet?