People link honor to performance, not behaviour
I don't understand what some people hope to get out of the honor system if they honor someone based on how well they played, regardless of any toxic behaviour that might have occurred.
It is not unusual that the most annoying and childish carry is the most honored player, simply because he... well... did his job and carried. It is also not unusual to see Yasuo mains with honor badges at the loading screen, only for them to proceed and be the cliche we all know and love.
I find it hard to believe that people find it acceptable when a system that should promote good behaviour gets distorted into something like this.
Maybe I just don't understand the intentions behind the system (especially the shotcalling option), but it seems to me that it's frequently misused.