Advice
Summoner 1: Hey,
, you should buy Magic Resist. Four of the enemies are Magic damage and their ADC is 0-5.
Summoner 2 (build is
and they're 0-6-0): stfu and don't tell me what to do.
You report Summoner 2, and honor Summoner 1 for at least trying to be helpful. Not the other way around.
As far as people who "don't need someone's advice" and report them for it are concerned, if they caused your team to lose because they refuse to listen to said advice, that's how you deal with them.
If a player goes 29-5-15 with nothing but 6
's and you win the game, good on them. That's not the circumstance I'm talking about.