That means maybe the people with great muscles and good hair have a genetic mutation that reduces the efficiency of DHT synthesis? I am assuming DHT doesn't affect muscle growth.
Firstly, "working out increases your T bro" is reddit-tier simplified. For example, if you are shredded, your testosterone (especially free testosterone due to higher SHBG) can be lower than normal. Just because someone is muscular doesn't mean they have a naturally high T.
Secondly, yes, someone might have just won a genetic lottery but 5α-Reductase inhibitors are quite popular these days.
Secondly, yes, someone might have just won a genetic lottery but 5α-Reductase inhibitors are quite popular these days.