Suppose there is a user who repeatedly
- Writes low-Q answers that often need to be removed
- Asks off topic questions that need to be closed
- Doesn't want to improve his posts because he thinks they're perfect
- Writes offensive comments against a few of our members
but at the same time occasionally writes a proper answer.
Is the latter then a reason to not ban this person? On any other SE site I'm active on, the third or fourth points would be enough on their own. Here, that doesn't seem to be the case. Are we using different guidelines here?
The problem with not banning a user but only removing his low-Q posts, is that the negative reputation is discarded, and the user gains reputation and privileges while he isn't representative for the community.
NB: yes, this is about a specific person. Apologies for asking this way. I flagged one of this user's posts with basically this story as a custom message, but only got 'helpful' back.