The average size of a single family house in the US is about 2300 sq ft. About 70% of people in the US live in single family homes. I don’t know the stats on apartment units, but my guess is the average apartment is about 900-1000 sqft. That would make the grand average for all types of homes about 1800 sq ft.

Are the returns stationary on this timeframe? When dealing with time series, especially non stationary ones, you should really be looking at their first (and potentially higher) order differences when computing correlations or R^2.

It's because the dots aren't the points...the larger thumbnails are. Regardless, as I've written in a different comment it is a very confusing choice of graphics.

I like the idea of including the subscription numbers to put the viewership in context (although as someone else pointed out the axis might not match the span of the data), but the way the movies are plotted and annotated is pretty confusing. At first I thought the small dot next to the text marked the position on the xy axes, until I noticed it would put Don't Look Up into 2022. Perhaps simply getting rid of the small circle at the end of the line extending to the movie thumbnail would alleviate any confusion.