Why is abusive, negative content allowed?

There’s a certain member here, I think we all know who I am talking about, who continues to be little everyone else here with their rude and condescending remarks.  He continually tries to insult and creat strife and division.  It is not healthy for productive conversations or for the site.  
Why will the moderators allow this poison to ruin the site?  They are turning people off from coming here and trying to start positive, useful content.

It’s a cancer that should be removed otherwise it’s going to have detrimental effects on this site.  Is that so hard to understand for the moderators?


Tammy is so incredibly helpful but I don’t understand why this negative behavior is allowed to continue and fester...