I got kicked twice for no f*cking reason.
First time was after attempting to connect to GTAO for 3 hours. When I finished the race, completed the store robbing and car customization tutorial and was minding my own business. The I got kicked for nothing.
Second time, I was joining a deathmatch. Game was starting (there was no option to change setting since it was loading) and instead of starting game, I was welcomed with "You have been kicked by other players" message.
I didn't get any "Bad Sport" warning though but still, it's annoying.
Especially when you get moved to Single Player and have to wait until the slow-ass character switch loads.