Kandel's just trolling, as usual. (It's actually hard to find him on an UNflagged character, and he'd be the first to give PvE'ers a hard time for complaining about PvP in a PvP zone.)
The PvP-related Gree missions are labeled as such. If you don't want to PvP, don't bother picking them up and just stick to the PvE-area pylons for your heroic. If you don't want to get jumped outside of the PvP area, learn to avoid flagging yourself - watch who you buff, go easy on the tab-target, tell healer companions to stop flinging green stuff around flagged party members, etc.
Anyway, Merry (belated) Christmas, Kandel!