Using basic types for domain concepts is called 'primitive obsession'. It's been considered code smell for at least 25 years. So this would be... not being primitive obsessed. It isn't anything driven development.

Different people draw the line in different places for this. I've never tried writing code that takes every domain concept, no matter how small, and made a type out of it. It's always been on my bucket list though to see how it works out. I just never had the time or in-the-moment inclination to go that far.