According to this post on MSO there is an algorithm in place that is used to trigger whether a Question or Answer ban is automatically applied to a user.
However, if an answer is left to a question and that question is subsequently closed and deleted, this means all the answers are also deleted. Do these collateral damage deleted answers count towards the Answer Ban criteria?
These answers could well be good and well researched answers (albeit against poor questions) left in good-faith.
Yes, one could argue that people shouldn't be posting answers to bad questions in the first place, and that it's then their own fault if they end up being banned from answering because of it, but SE is full of people who just want to help out even when questions are poor, so should these people be punished in the same ways as people who just leave "lol, great post! Check out my free-coupon website" answers?