Recently, I have observed some user M who consistently posts nonsensical questions and in many posted answers takes an opinionated, unscientific, often even illogical stance.
The user has around 100 site rep. and gets consistently downvoted. However, many users are still trolled by M and engage in discussions. I mostly ignore M's posts but it is even annoying that I have to check the username every time I read a new question. Site visitors less familiar with economics may even be misinformed by M's posts.
Is there a way to solve this problem? What should my own course of action be?
I am not sure whether it is OK to post the username and example questions here. If it is OK, I will edit these in.