A few words on ignorance

All it means is lack of information. But in this game, it's your job to be informed. It's unreasonable to use the excuse that you didn't know Kled was a champion if he's beating you. Always read the updates.

As for higher ranked players, they can be ignorant too. Especially here on the boards and now that Sanctioned Boosting Queue is the only form of Ranked. Anyone can be completely wrong, regardless of how much they like to pretend they aren't.