Sarms are garbage they are basically steroids that weren’t chosen to manufacture because of too many sides or lack of results compared to the steroids that were manufactured and used in medicine. So him having noticeable side effects isn’t surprising
I hate to harp on this but the literal selling point is that they aren't steroids. They aren't discarded anything, they are new, and the other selling point is that they are more selective than steroids, more anabolism, less virilisation. Problem is, if you activate the AR you are getting virilisation too, can't select that out.
There is some indication ostarine might be a good female use compound because it appears to show weak virilisation in studies.
Some SARMs are effective but they don't have 60 years of data like steroids so it's unknown how dangerous they really are.