Map owner abuse?

This isn't a guild or a pack of mules hoarding maps across channels, a bit less serious. Is it fair if someone holds a map by using a skill once every few minutes to keep ownership.
I was trying to leech my friend but every channel was full. I found one channel with people afk and nobody was killing mobs. I started killing mobs and the map owner asked me to stop since he was the map owner. I said I just want to kill while he's afk but I won't steal the map. He did not want that so I stopped. He proceeded to cast a spell once every minute or so to hold map owner, for about 30 minutes since he was eating.
I did not want to risk getting banned since I'm unfamiliar with the ban/appeal rate but this does not seem fair. There are people who want to play the game and there is someone abusing a policy so they can eat and relax without the fear of someone stealing their map.
What do you all think?