2) The VIX is simply implied vol on the broader equity market (s&p). High yield bond indices are broadly diversified like the s&p, many of the same constituents. Therefore the merton and kmv models that I referenced apply not only to individual companies, but also the market as a whole, so I would point you to those incredibly academic and rigorous model, although I will acknowledge gaussian copula/multivariate distributions are a little complex for anyone not holding an advanced math degree.
3) Not sure I get the point.
2) You didn't even understand the question I asked, did you? (Hint: It was about empirical evidence.)
3) Of course you don't. All you've done here in this forum is show a lot of useless jargon and overconfident bombast. You have little ability to back up a single claim you've made .
Any further conversation with you in this thread is a complete waste of time. (Just be aware that, on AI, you'll be called out for your BS again and again).