That's a buff. A removable one even. Don't want it ? dispel it. Really, I can't see where the problem is. A lot of "Hardcore" (if not all) don't play with PUGs anyway, so why would it bother you ? Noone in your hardcore group will ever activate that buff, it is really unlikely for you to ever see it due to wiping so many times on previous content...

What was your problem again ? People you'll never play with will beat the same content as you do with a buff you'll never experience because you're a pro for these fights already ?