you need to have left quite a number of games for the system to take action, also, it isn't unfair for riot to expect when a player wanna join a game that they atleast have a computer that can run the game without crashing and a steady internet connetion.
haveing a leaver in AI can leave the game 100% pointless for someone wanting to try out something if they suddenly needs to change everything they are doing to cover up for it (exsample: if the ADC leaves when a player wanted to try out full support / top leaves so jungler has to solo lane insted/ ect)
also, the level range on AI games is much bigger than on normal.
stop trying to sneak around your own short commings with bad excuses, fact is, if you didn't leave so many games befor then nothing would have happen and thats your responsibility regardless if it's AI, normal or ranked.
simply stop leaveing games...