I'm in contact with many blokes on HRT for hypogonadism, and only a small amount of them actually feel as if TRT has cured their ills.
Thats because low T itself is a symptom of a much larger issue and not the problem itself. Most people who just rely on TRT and dont continue to try and get to the source of the problem never really get the full benefits because the same issues causing low T are also causing many other problems.