Why is kog the problem? Nearly any marksman with that much peel would be hard to handle with that much peel, especially for a team lacking damage.
Twitch and Vayne would be equally or even nastier to play against in that situation, Varus would also be hard to handle.
But back to what happened to the kog -
So Galio and Janna sat ontop of him, only 3 things actually hit him and he had janna shield and ulti, galio locket and ulti and he survied and somehow kog is at fault?
The entire sum of effort on that kogs part was walk in, get hit by the seju ulti, get thrown around like a ball while his teammates stacked shields on him.
And he survived because C9 missed everything, failed to follow up on both the seju ulti and the ori ulti before grag ulted them all away.
The only things that hit were seju ulti, low AP ori ulti and a single item cait headshot.
So in order to save kog in that situation it wasn't just Janna and galio blowing everything to keep him safe, there was a grag there too who also displaced enemy team away after they missed the timing.
Janna E-R
Galio locket+R
Grag R.
So what people are saying here is essentially " OMG KOG´s TEAM USED EVERYTHING TO SAVE HIM, KOG OP PLX NERF."
It sounds so incredibly silly ._.