As a jungle main, its extremely frustrating when the game tips into the enemys favor because then your team starts to go on tilt. And the easiest way for some people to deal with this tilt is to blame something or somebody else as a form of stress relief. And the easiest person to blame for their mistakes is the jungler, respectively, sense they believe that the junglers only job is to camp their lane.
Yes, its stupid.
Yes, its unfair.
Yes, people should respect you and accept blame.
No, you shouldn't talk to them back.
No, flaming is never okay.
I mute everyone as soon as I get into game, sense the only information you need can easily be communicated through pings.