Why are players in ability Draft so toxic compared to normal dota?

Me and a couple of friends started playing AD 3 months ago and we are now ADDICTED to the game mode, and we have played it non stop since then, we are having so much fun.

But holy shit, the player base feels so toxic and demoralizing most of the time. We have a 1 or 2 toxic flamer, complainer, or a immature dude who gives up after some small thing. We used to play a mix a turbo and sometimes ranked and we never experienced anything close to this. no kidding I think we get a guy like this 10x more often than when playing regular dota.

I cleaned my dota+ avoid list and is almost full now after a couple of months. It took like 3 years of regular dota to avoid the same number of people.