Oh totally. It also probably is the formats they already had -- so they just dumped them into a file -- versus making something more orthogonal and ergonomic.
I'm not sure what format they store their records in, but I have a hunch it's a lot more structured than what we see in the CSV files. The data dumps have to comply with some CMS guidelines set out here: https://github.com/CMSgov/price-transparency-guide
They use relational databases. Then a zillion ETLs to massage that data into every format they need it in, of which this is one of them.