I agree.
Cloth bag, paper bag, "handisac", is some sort of a bag. A new, "bagless' OR your Rainbows, Filterqueens, etc have NO bag. thus: bagless. However, for instance, on a HOOVER "Brushvac", you open the 'cup', and there is a bag-like apparatus. I know some "Pixies", etc had an "optional" bag setup.
But, that's getting picky.
So, yep, if there is a BAG on a cleaner, I'm thiking it's safe to say it is NOT "bagless".