Working in the medical field, I have become acutely familiar over the last 3 years with people who have no medical training, and indeed do not even comprehend just how little they understand, making wild, entirely unsubstantiated, and often downright impossible claims. I have seen it enough, and the dangerous outcomes such a self righteous Dunning-Kruger bias produces, to be alert to recognizing it in myself. I have no formal training or education in cryptography. I don't even have any formal training or education in any of the fields which underpin cryptography, computer science, mathematics, cybersecurity, programming, etc. I know a bit about these things, sure, but I am entirely self taught and I am under no illusion that what I do know barely scratches the surface of these fields. I know enough to know that I don't know nearly enough to start making up my own ad hoc entropy generation schemes.

Which is why I have advocated that if you want to generate your own entropy from a physical process, then to simply flip a fair coin 128/256 times (or more, using a von Neumann debiasing approach, if you can't be sure the coin is fair or you will flip it fairly), and turn that in to a seed phrase directly. Don't try to perform randomness extraction on a series of dice rolls when you've likely never even heard of that term before.