I know it's not that important

Well the point of box office is to measure the money. Also, there are things like 3D movies and stuff. Also, you used the wrong meme

I like his idea...even if it is the wrong meme.

It also doesn't account for inflation, so the numbers are largely useless. Tickets would definitely be a better measure of success, at least when you're comparing against other movies.

Maybe it grinds his gears...