I thought there was a “has difficulty differentiating LARP persona from real identity” criteria on the list. Seems like that should come into play in the situation you described.
On a psychological level, LARPers temporarily enter a fictional world with characters who reside within it and are separate from day-to-day reality; there is no discomfort in distinguishing between the two.
It implies the opposite -- that violent extremists may have trouble distinguishing -- but doesn't seem to say it outright.
