I had no idea, thanks for sharing. Again, I'm very much a layman to this subject, but how does miniaturization necessarily affect that particular aspect ratio?

I had no idea, thanks for sharing. Again, I'm very much a layman to this subject, but how does miniaturization necessarily affect that particular aspect ratio? Since it's literally a ratio of two dimensions of the torus, shouldn't this be invariant to the overall size? (Assuming all things being equal, which I have no idea whether holds.)