Holy Crap

More like harming leechers, because it's rather hard to die from Newties unless you totally forget to pot.

What about classes without summons? Map full of d/c'ing monsters = fail. Not only do you lose out on whatever buffs you had if you d/c, you lose your training map either way.
What about going afk, do you not do that either? What about people who don't have enough HP to tank a hit and rely on never getting hit by the newties, by sniping them 1 at a time from safe range?

Of course a hack that makes maps untrainable affects legitimate players.