[Aperocky]

Simple vs Complex should always be evaluated holistically.

Each file could be simple but if they are in 5 level of inheritance, then it's not simple as a whole. Same with 10 different way to do the same thing or 3 different class that can be used to the same effect, it's not.

Your case is clearly adding complexity as the new class have no reason of existence, as it's just rebuilding part of the standard library which your compiler would likely have included anyways. The suggestion is clearly a bad one but our industry is filled with people who are either incapable of adequately applying "Simple > Complex" or don't believe in it. That's why enteprise FizzBuzz exist.