If you are eating a well balanced diet and include MANY of the different colors of vegetables and fruits, you shouldn't need to spend money on supplements. Except maybe a multivitamin. Or calcium if you're a woman.
Overloading on specific supplements can create a lot of really expensive pee and poop. And some supplements can also create health problems (BTW creatine is one of them). Not sure what that guy has to say specifically on the subject, but you can literally flush a lot of dough chasing the supplement-yourself-to-get-the-body-you-want dream.
don't a lot of women need iron too? anemia seems a common complaint. more and give lots of iron