Co-op vs. AI bots should also go AFK in Twisted Treeline

Just played a co-op vs AI intermediate with a level 9 and an AFK. While it shouldn't be too difficult to carry, vs. champions such as Garen, Swain and Kayle, playing essentially 1v3 is not fair nor fun. I understand intermediate bot games aren't supposed to be just for first win bonuses etc. but when a player disconnects/AFKs, the Twisted Treeline bots should too.