Moore was right. The montages were just a waste of time. But I never was a fan of music videos.
While it is possible that Moore was let go and did not decide to leave on his own, is it not also possible that he did decide to move on?
Nothing you have posted here gives any support for the thread title.
As for many of the changes instituted on HNIC, I was under the impression that most of them were the work of Gord Cutler, who was hired and given full control of all on-air NHL production.
Gord Cutler Appointed Senior Vice President of NHL Production, Rogers Media
Now, Moore does bear some responsibility for hiring Cutler but clearly based on the above press release, Moore was not going to be micromanaging him.
It seems that Moore may not have agreed with all of Cutler’s changes based on this Yahoo Sports article about Cutler’s firing:
Rogers changes course on NHL by axing TV production head Gord Cutler
In short, I don’t think you can blame all of Rogers’ HNIC changes on Moore, though, of course, as I said above, he does bear some responsibility.