There is a difference between being bad and being put down.
Honestly a lot of times people on the boards and ecspecially people ingames complain and report feeding of others, but a lot of times i notice those Things came based on pure misconsception of what happened. A Bad kda doesn't necessarily mean that Person is feeding. Some people just had bad days, others are victims of stupid egocentric kids who have fun making someone the bad guy. I often see people getting camped for the sheer reason to receive a badmannering provocation from that camper afterwards. AND To top it off, that Person Needs to hear your tilting complains about feeding?
People should learn the difference between bad Players and victims of badmannering. it's a reason why a lot of times you on the boards also see people who in their chat logs have a mention of telling someone to stop feeding then proclaim that as "Constructive criticism". No, it is not criticism to say "Stop feeding" It would be constructive criticism to say HOW to stop feeding, regardless if it is their fault or not. not every 0/10 did that by himself. some enemy teams are just that much of an asshole compilation to camp someone into the ground and even happily lose the game just as long as they get to express their somewhat sick 12 year old egocentrism.
long story short, dont judge if someone has a bad kda beforehand, try to help first, and dont be too hard on These people. they often already got it hard enough as it is already with trying not to tilt, and possibly being in a bad mood from whatever life threw at them.
i feel like it is a massive issue with how fast people judge and how often that judgement leads to reporting as the executive step to do.