I didn't see it mentioned in the article, but yes, High-Test Peroxide (and a catalyst) is most definitely a legit rocket fuel and the byproducts of that reactio

I didn't see it mentioned in the article, but yes, High-Test Peroxide (and a catalyst) is most definitely a legit rocket fuel and the byproducts of that reaction are oxygen and steam. I believe John Carmack's Armadillo Aerospace venture used HTP.