Did you know not performing as you think another player should in a group

[MoroMurasaki]

Who is defending it I am simply saying there is no way to verify that the guy never casted any other spell. Or whether this guy is being completely honest about his story of this person. And if the group never wiped because of it. It simply doesn't matter anyway. DO you know every single spell that every single member in an 8 man group casts. Or even a 4 man. Are you that aware of what every single person is doing every single second. I doubt it.

As a healer who plays AST quite a bit I pay a ton of attention to the DPS in my group to see who I should buff the damage of with cards, it is 100% possible to spot this sort of behavior without a parser.

Whether or not this situation was real is a moot point, if it was real it was handled correctly by the party. Offer advice, get dismisdive or rude response, kick offending player.

"Not wiping" is not the only measure of success for many players. We are not wrong because we want to be improving and doing better.