Lik is quite talented, and there's no doubting that his work is technically good and would look great on most anyone's walls. As for "art," there's lots of opinions about what qualifies as "art," and you almost have to define that term before you can even start arguing about it. There's commercial art which is sold through gallery businesses, and those folks are usually catering to homes and businesses that want good stuff on their walls. There's art investors, folks who buy to both enjoy and resell later, and then there's art that belongs on the walls of MoMA, ICP, Hirschorn etc. At $6+ million I'd expect the artwork to be MoMA quality, but I don't see that. But it's not my money either.
BTW, the video at the link discussing art photography sales is interesting, and I generally agree with her.