Multiboxing dungeons with RaF can be a hassle without heirlooms because you out level your gear so quickly, so if you're not filling up the entire party (or at least a majority of it) then you're stuck having to deal with people who tend to be ignorant or prejudiced toward multiboxers.

Then again, for all we know you might actually be a bad multiboxer who isn't pulling their weight, so the kicks may be justified.