The US flag in the background of the treadmill is kind of offensive -- it touches the ground, etc. (and the waving them around parts outdoors, too, later in the video). The flag-pants are not something I'd ever wear, but that's more ambiguous.
Hardcore nationalist = you must display flag. Anyone who follows US flag code (military, older people, etc.) just believes "no obligation to use the flag, and in fact it's way overused, but if you're going to display it, do it in a respectful way".
I hate people with flags/ribbons/etc. on their cars, generally.
Awesome video overall, though!