No, the argument is that: DHT derivatives COULD unhealthily lower estrogenic activity, NOT WILL (because it varies person to person, and may be dose dependent).
As stated, I experienced the same thing Matt Porter reported, about two weeks after starting legit Syn Primo E, at about 400mg wk, test e 300 mg. I don't have joint issues, but my joints suddenly started feeling like they were run over by a train. Dry and creaky. Stopped the primo and the joint issues immediately starting clearing up. If the test base was 500 mg+, I suspect this issue wouldn't have occurred.
Previously, this happened after about .25 mg of arimidex. I don't get gyno, even at higher doses. If I get any sensitivity, I take a little mast prop, and it goes away. If you take DHB without a test base, you likely won't get any estrogen conversion, which is a bad thing (as Dr. Serrano noted in the video).
Longer term, I will be daily 'microdosing' with shorter esters, as the research also suggests this may be better for estrogen management, while I continue to avoid all AIs and serms.