I can. Ubuntu is decreasing in quality and Pop OS is already being billed as the better Ubuntu. It has a good commercial backing and is slowly but surely gaining popularity due to its polish.
I can also confidently say that most people using Pop aren't using it because of the theme, and Pop!_OS is actually marketed to STEM and developers rather than gamers. It's just that a lot of PC gamers like what Pop!_OS has to offer to them, so it seems that way by word of mouth.