What's the alternative? Write an inline sort routine 30 times?
I'm not so sure the example is particularly good. Assuming the sort is just a one line call to a library routine, then the comment would be unnecessary. You call the API, then you sort the results and it should be obvious to any maintenance programmer why. Don't comment obvious stuff.
If you are doing this 30 times, then put the API call and the sort in a subroutine called callApiAndSort().
The suggestion was that a comment be used when the reason for the sort was not obvious. Not that every sort be commented to explain why. So there's no reason why you'd wrap every sort call in a custom subroutine either.