LIKE WTF Riot... like u know it's internet problem (something not in my control) and I get a 10 min ban.... like get a grip
You get a warning nowadays for a first offence. So it's something that happened multiple times. Like I am sorry about your issues, but your issues effect 9 other people. If it's a known problem it's on you.
Also if you have a large ban from leaving ranked games. You can work it down by playing unrated without leaving. The offence system IMO is in a good spot. It gives you are warning on a first offence as accidents do happen. Whether plans changed, internet outage, etc. But punishes those, severely at times if they are chronic offenders. And then gives them the option to work at lowering the suspension by playing unrated without leaving games.
People leaving games takes all the fun out of a game. So I have zero issue with Riot swinging that temp ban hammer around for people that don't care about others enjoyment. Don't care if it's a minor mode like Spike. If you're rage quitting out of spike rush you need to evaluate yourself. Or at least don't complain about the time if you did the crime.