I take it as it is what it is... a video made by a layperson who is NOT a tech... the kids look to be about age 2... so not horrible to have them ff
it looks like they removed any site of the vehicle seats to try to avoid any tell of what vehicle they are in (but on the driver's side, you can see part of the vehicle seat)
because of the angle, I can't tell for sure about the proride's harness being at the right height or not, but it looks like it could be AT his shoulders, where at that angle, it would look bad, but actually be fine.
the real problem with the other seat (and it's not that it's dorel in this case) is that it's clearly expired (note the puzzle buckle and the pattern which tell me it's about 11-12yrs old) AND that the straps are twisted.
I bet the best way to inform the store about the issues with the commercial would be to contact the up and ups directly -
http://www.lonestarbaby.com/contacts/