I work in automotive. I think it’s worse but in a different way.

Sodium chloride attacks exposed metal pretty badly.

Magnesium chloride seems to attack powdercoat, e-coat (electro dipped, all cars parts), and nickle coatings, as well as clear coat wet paint seemingly worse. Which then leaves spots exposed to rust. It seems to hang on to the vehicle and attack the entire winter. I’ve found that areas that switch to mag chloride have worse looking vehicles, so, imo, worse.

It’s also pretty awful for the environment.