Sorry kiddo, thanks for playing! But no, your pedanticism falls on its face. The differentiation you're saying "no" to is that everything that isn't hydrogen is star dust. Pointing out that that means that star dust is processed hydrogen is a "yes," not a "no." That was actually the point. It is that act of "processing" that creates "star dust." *whoosh*
What he said was we're "all" star dust. I was pointing out that the portions of me that are still hydrogen are not star dust. It was a play on the word "all," primarily. Attempting to label the star dust as still being hydrogen, which seems to actually dispute that the periodic elements are different substances, combined with the word "no" attempts to offer a correction, but is actually not even hitting the point. Even if it were so, it would in no way change the prior exchange. The helium is no longer hydrogen, but the H2O still has some. Even though the helium was made "from" hydrogen.