That was so extraordinarily silly. That guy presented no evidence for his assertions. And there are no good reasons for everyone to spend a lot of time at the gym. I spend a lot of time at the gym (and have for decades) and I have no interest in supporting any right-leaning politicians. The politicians on the right in the U.S. are certainly authoritarians. Even the title of his video was silly. The Communist party in the U.S. is very small. I don't know of any Communists running for office.
It's not a good idea to give men extra testosterone if they don't medically need it. Doing so can result in prostate cancer.