Considering none of them actually show premium movies it's a bit of a sham.
I was thinking the exact same thing.
If anything WGN, WPIX11 and KTLA should be considered networks in the same regard as NBC, CBS, etc. And with the high amount of reruns they show, Peachtree is more along the lines of TVTropolis, but the fact that they show the same catalogue of B Movies and flops month after month gives Bell a loophole to call them a "movie channel."
At the end of the day, Bell knows that removing Peachtree, WPIX11 and KTLA from Premium Movies and making them a $5 theme pack would result in a significant number of subscribers dropping Premium Movies. Not a majority, but just enough that it would affect their profit margin a bit.