Killing an intentional feeder, when it's obvious they're inting, should be reportable

It is griefing to me. Winning a match because someone on the enemy team decided to int is undeserved. Inters do what they do because they want to tilt their teammates. By killing an intentional feeder you're tilting and infuriating the enemy team at least as much as the inter him/herself. As per the definition of griefing you're using an anspect of the game in an unintended way and intentionally frustrating the enemy team in the process. Same as the inter. Besides, it is unsportsmanlike conduct to exploit any unfair advantage you may get.

Some may say that, especially in ranked, they couldn't care less. Inters exsist only in competitive games because losing is the biggest frustration and they want to make their team lose as a "punishment". I'd go as far as surrendering on the verge of victory, because doing that denies the inter's goal and frustrates him, while relaxing the rest of his team. If inters/trolls can't reach their goal they won't try because they'll know it's not going to work. Such behaviour from all of us would deter such people more than any in-game punishments will.

But I doubt anyone besides me is willing to lose a won 4v6 game and so, inters gonna int.