We can dismiss the  argument that the NHL is serious about concussions and instead focus on NHL response to threats on NHL earning potential .... because that is what the response to McDavid getting a bump really is. 
Had McDavid been chosen by the Canucks,  the NHL would not have noticed. Like when they didn't notice the head shot hits on Naslund, on Henrick Sedin, on Daniel Sedin, etc. 
Watch, the NHL will likely NOT notice the shoulder to head hit by Taylor Hall on Larsen last night. They'll call it something else. Even though, on video replay, the shoulder clearly knocked him cold. No financial harm? No penalty, no suspension. 
It's just money in the bank..