I do accept the 'Graceful Exit' as accepted game play. Combat Loggers use means other than the included log out mechanism.
And some PvP'ers argue any form of exit after they start an encounter is "combat logging".
I've seen them demand the exit timer be increased to the point that a normal fight would be long over (so no point in trying to exit, as you're toast either way)
So it is back to what I've said all along, some people just want seals to club.