Perhaps, but someone like Bowman, whose name alone carries a ton of weight, double so as an NHL GM, was certainly in a position where the risk to himself was going to be minimal if not nonexistent. He wasn't gonna get fired because he wanted a sexual assault accusation investigated. If anything if it came down to a power struggle, once people found out what the power struggle was about it's the other guy who was toast. He very likely not only retains his job, and continues to have most if not all the success he's had with a strong roster, he also becomes a hero of the story.
When it's allegations like this, your #1 job as a senior exec and a decent human being should be to find out the info, right? This isn't someone coming to him saying an employee might be stealing kegs of beer, and he kind of brushes it off as not worth his time. This was serious stuff involving a potential predator or criminal under his nose.