I have to chime in with the pseudoscience. Aside from the fact that the video screenshot screams clickbait, "bro-science," I think you and others are probably misinterpreting what IF does as far as autophagy, as far as I can see, this has really only been observed in yeast (which is what the scientist who won the Nobel Prize conducted his research on) and human observations are limited. From the Nobel press release:

"After the identification of the machinery for autophagy in yeast, a key question remained. Was there a corresponding mechanism to control this process in other organisms? Soon it became clear that virtually identical mechanisms operate in our own cells. The research tools required to investigate the importance of autophagy in humans were now available."

What you linked to was clearly a site intended to interpret the results to suit the agenda of IF, but the reality is nothing like this has been observed in people, so the claims being made about IF and autophagy seem, from my brief look, theoretical at best.

If IF works for you, great, I don't think anyone is bothered by it, but I think what is bothering people about this and other diets is the evangelism, especially when people back it up with crap science and misinterpretations of actual science.