No, it is never commented on because most non-humans in Star Wars don't really resemble "a human with facial make-up."
Here are some large gatherings of non-humans sentients from across the main films.
As you can see, due to extensive use of prosthetics, puppetry, CGI, costumes, etc. very few non-humans in Star Wars significantly resemble humans. Star Wars had a much budget than Star Trek, so this makes sense.
As for the few species that do resemble humans, there are several reasons for this:
- Their ancestors bred with humans.
- The species was a sub-species of humanity.
- The species simply looked like each other due to coincidence.