This is very accurate, in particular when the output type of something depends on the input type.

Data validation, typed database access, or functional programming libraries are good examples. Particularly the modern, leading libraries of such areas, if you look into their code you'll generally see very intricate typing. For FP libraries it's particularly tough. I like to use Remeda which emphasizes being very type-safe, but that means it's inherently more limited in what functions it can offer compare to other libraries which choose to compromise their type-safety. These kinds of techniques mean that libraries can offer greater functionality while remaining type-safe.