Yeah, DFA clearly labels vids that use houserules as such so there should be no confusion.
But let’s unpack what “houserules” means in this case: Alpha Strike Commander Edition comes with a healthy amount of optional rules to give the base line game more depth. So “houserules” should not be interpreted here as somehow “against” the intent of the game. The design philosophy of Alpha Strike is about flexibility to begin with, allowing players to dial in or out the amount of crunchiness they want (especially in relation to how much one wants Alpha Strike to resemble CBT).
What the DFA guys want is something a bit closer to CBT than basic Alpha Strike so they use some optional rules from Commander Edition, having further modified some of those along the way. One example would be rolling attacks separately. Another would be changing the movement/range scales.
Having played the most basic version of Alpha Strike back when first edition came out, I have to say it was very boring to me. It was like Baby’s First Miniatures Game. Maybe that is okay if you want to put dozens of mechs on the table at once. I much prefer the way DFA have developed Commander Edition for their purposes.