I read his comment in the original post and thought he was endorsing your article, which, for a moment, made me think Yud had a little more magnanimity than I’ve seen before.
RE: covalently bonded bacteria. Here’s evidence of how Yud is joking: he understands bacteria as well as I do, which is not at all. However, I know that bacteria can be spooky, so if I were Yud trying to make a joke about bacteria, I’d google for developments in bacteria research and pick some phrase that stood out.