Actually, we're talking about a hostile workplace. You can try to diminish the severity of the problem by reducing it to just "mean words" but if the investigation determines that Incognito created a hostile work environment and the team in some way encouraged it, this is a pretty serious matter.
If, but nothing as of yet has pointed to that. If it ever does ill change my point of view as I have worked in a legit hostile workplace before. As of now though this 100% points to Martin being mentally weak and Cog being supported by the locker room.