Oh great, everyones' complaining paid off...
They took the "You are ineligible to earn loot" notification out of post-game.
I just finished a game, no notification, so I assumed the system finally considered me reformed. Lol of course not. Even if we ignore how much of a let down that was, it's going to be so great when the boards get a bunch "bug reports" because people don't understand why they aren't getting chests now.
Good job Riot Games.
Late Edit: I think other people are actually still getting this message. It may be it goes away after the first couple of times, which fixes 90% of the problem I have with this. Carry on Riot.