His graduate and undegarduate degrees are in physics.
It almost looks like he didn’t write this, but who knows.
Sorry, I just posted a couple of the same points you already pointed out. I did’nt read all of the comments yet. And also, his mathematics are based on his flawed assumptions, which is why the math is way off in terms of time frames. Decay rates are variable and would not be the best predictor of age anyway, something the author of the article misses too.