On the NHL destroying their YouTube content creators...

Don't know if anyone has seen this, but the NHL has been claiming every single Hockey Psychology, Next Man Up, Eck (and more hockey YouTubers) videos and today I've seen that most of these channels are being forced to stop making their content. It's so frustrating seeing the NHL destroying everything that helps grow the game. It's insane how behind the times they are.

EDIT: These are the posts the channels I mentioned did about the topic:

Next man up, Eck, Hockey Psychology

EDIT 2:

It's being reported that it might be a "glitch"