The reason that a program should strive to be unixlike is portability. The nice side effect is little bloat. Being unixlike is about the scope of a program rather than trying to make the implementation as basic as possible to the extent of not taking flags. If a program relies on another program to be useful, that's clearly not portable. It's no different if it's a library or another executable.

These cmdlets are excessively small in scope and that makes them intrinsically tied to one another. They're useless without their sibling cmdlets. In effect they're one giant program.

So I completely disagree that these are more unixlike.