"IDC, I just dont feel like it, afk farming"

I see this a lot lately, and it irks me because there's nothing I did to cause it. The person just says, randomly, that they don't actually care about the match at all and then they proceed to just afk farm until we lose. Even during this bipolar fiasco I was cool, supportive, and I made some puns. I never said anything about the person after he just decided to quit.When I asked him what was wrong he just spammed chat with messages like "I'm done" "I don't care" "Whatever" "I don't feel like playing" and this is a ranked game. I get if you're under some serious harassment you'd be well inclined to throw in the towel, and I would respect your decision if it were bad enough, but this kind of carefree, whatever attitude just doesn't really belong in ranked. The players that do this don't trigger a review, so I figured I'd bring it up, not necessarily as a raise holy hell and bring up the Riot army post but as a gentle nudge that this does occur and it really doesn't belong in ranked. If you don't feel like playing, don't play until you do? Or just kick it in norms or aram for a pleasant match that you can relax in.