Banned after one game ?

Is this a thing ? I know you’ll get banned after quitting too many games, but I just got on Halo 5 after not playing for like a month, and my partner lagged out so I left to rejoin them, and I got banned. Is this really a thing now ? I’m not a quitter so this comes as a surprise to me.

Hi I’m The ban thread please feed me

If you’re trying to troll, it’s not appreciated.

Pleas use the ban thread if you wish to discuss of get assistance with any matchmaking bans, thanks