Its not clear whether the OP was referring to the mole, or to the person(s) who were allegedly sharing confidential company information on an external, non-company Discord server. Rockstar claims that is why they fired them, though the fired employees allege it was to disrupt union organizing. Depending on ones point of view, either or both actors could be considered despicable.

I was indeed referring to the mole. I find that behaviour reprehensible.