It takes a large amount of number crunching to determine that an old small Japanese car has the cheapest TCO.
The same follows across the categories (e.g. the article's specific focus on sedans).
A whole bunch of mid-market brands seemingly exist for no reason other than for some groups of not-wealthy people to waste money in an attempt to impress other groups of not-wealthy people.
e.g. the German cars which seem to exist as some sort of indicator that someone can afford to burn money maintaining a depreciating asset.
It's basically the (non-smart) watch market, right. You wear a Casio-level watch if you don't care, a Rolex-level watch if you're signalling, and other stuff is basically an enthusiast market.