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Reminding me why I dislike videos for this kind of thing—30 minutes of blabbing and maybe a couple minutes of useful content. And regarding progesterone and anabolism, you just get a vague mention of "studies". So you're better off tracking it down on your own. This is probably one of them:

[URL unfurl="true"]https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3879672/[/URL]

In postmenopausal women, both T and progesterone treatment increased the muscle protein fractional synthesis rate by approximately 50% (both P < .01), whereas it was not affected by estradiol treatment and was unchanged in the control group.

So even if progesterone is producing desirable effects on musculature, which isn't totally a given, the effects are not better than with testosterone, and it would be foolish for a male to take 100 mg progesterone per day unless he's doing the trans thing.