that guy is a tool and a blowhard. he rails on fasters, says workouts and calorie restrictions induce autophagy, well so does sleep (as i mentioned above along with exercise) and fasting, and to your point there is a basal rate of autophagy but given the onslaught of cancer, neurodegenerative diseases, chronic conditions, etc. it seems to me anything we can do to help our bodies heal and cope is a good thing.
calorie restriction is great for autophagy, so is a sustained intermittent fasting (16/8 is a really common daily pattern there are some weekly patterns too), but some folks - like me - don't want to deal with IF on a daily or weekly basis, and I for sure don't like constant calorie restriction - fuck that noise completely, that's gotta be worse than Dante's 7th level - so the alternative I choose is the 3 day fast 3-4x per year. Intense, but short lived, in and out and then back to my regular attempts at a healthy lifestyle with exercise, sleep, diet, destress, relationships and cognitive health as my primary focus, making fasting a few times a year just an "extra on top" of an otherwise intentional plan to pursue wellness.
And the published research is emerging but clear and promising that calorie restriction / intermittent fasting / sustained fasting (they are all calorie restrictions) are beneficial to a whole range of bodily functions just like resistance/weight training, HIIT, sprint interval training, zone 2 training with bumps up for extreme bursts, eating green leafies, lots of fruits, whole grains, avoid animal saturated fats, 10 minute walks, 7000 steps a day, etc., etc.
But hey, don't forget to hit that like button to help this brother out.