What is best to be done about a user who deliberately posts answers as comments in order to evade (in particular negative) changes of his reputation/karma? The user even admits this behavior.
On our platform, users have the possibility to convert their own answers to comments. The user does this multiple times, arrogantly insists on his "right to comment", and therefore maintains a permanent edit war.
This is not the first time the user has done this behavior.
In my community, answers and comments can be up and downvoted, and they are written by the same editor. The technical difference between them is that for comments, no edit history is stored and votes on comments do not affect the reputation of their author. Administrators and moderators can freely convert between answers and comments, whereas registered users can only convert their own answers to comments. Answers should at least partially answer the question, and neither answers nor comments should be off-topic to the issue of the question.