What will happen is, you will be punished. Asking for reports is punishable offense, because all it takes is one report to flag a player in the system, not 9x. More reports do not carry more weight and they do not stack against a player.
By all chatting others to report someone, you are adding fuel to the fire, regardless if you think the other player's actions deserve it or not.
They did away with "ganging up" on people with multiple reports years ago, it was too easy to abuse.
When you think about it logically, by asking others to report someone, you are yourself being toxic and griefing. What if it's someone just having a bad game, for example? And they're 0-5 or whatever, but genuinely trying. It's far too easy for people to jump on the "report bandwagon" and start griefing in chat "report player x! report them!". Hope this helps.