Depending on the type of estrogen receptor activated, increased estrogen levels can be for good or not in male bodybuilders.
https://www.ironmanmagazine.com/muscle-growth-and-estrogen/
ER-B agonists: genistein, coumestrol, 8b-VE2
https://www.ironmanmagazine.com/muscle-growth-and-estrogen/
ER-B agonists: genistein, coumestrol, 8b-VE2