I still would hardly do it because most people are just obnoxious and deserve nothing
But etc. when you have had a great game with someone who has just not played well, but contributed in the chat like for example:
"gj, you managed to kill that fed diana"
"lets go team, ALL TOGETHER AT MID NOW"
"gj all"
"shame you died, we should probably not go alone in the enemies jungle anymore"
"Good luck, Have fun."
"ggwp"
Something like that, if the game lasts for like, what 40-60 minutes I think someone who has did/contributed somehow like this to the team deserve a great teammate honor.