GM why 1 person say something stupid on global and the rest of server suffer? why  not  temp ban that person account?

There are many many people that push the boundaries. It's not just 1 person, but when there is an increase of complaints that distract me from events, updates and everything else.. its easier to just disable global. The problem is, people complain about "real life attacks" expecting me to know the intimate details about the person. I have no idea, so random comments are just random to me... but to some, they are offensive and childish.... I dont have hours and hours to figure it out.