That's not an overly compelling argument though either because if the circulatory system worked that way, there would be consequences to it and ways that that system could fail that you aren't thinking of in this moment. Looking at what is and saying it could be better doesn't in and of itself work as evidence that there isn't a creator.

Evolution and Darwin's studies provide far better evidence along with the carbon dating that show the true age of the earth. A Snarky insult backed up with flimsy thinking is far more likely to cause someone to entrench in their extreme position. Your way would be extremely counter productive and is more of a cathartic expression for you and not intended to make anything better.