To be fair (and I am not trying to defend these 'Slick guys'), sometimes there is a lot more happening behind closed doors that a PM might let on. Fights for resources, maintaining a current team, hiring, ownership, etc.

Oftentimes those people trying to portray a 'Slick' exterior are doing so due to the need to portray a sense of success/confidence for their team, to make sure they retain their existing budget and that the team doesn't get moved to other projects or terminated entirely.