This is certainly a factor. The problem is it's so hard to test neurosteroids on live subjects. You're playing in the dark. This is what a lot of people from raypeat forums are talking about.
For myself, I have a libido, dick works fine, although my sex drive is not as high as it used to be, it could simply be because I've been with the same person for 3 years and its less exciting. When I am around other girls I can become very aroused.
My issues are seemingly cognitive, brain fog, energy issues, etc. I found overall that reducing inflammation helped a lot. Something regarding inflammation plays a role on neurosteroids and brain 5ar.
Taking 5a-dhp helped me quite a bit, but especially GHB. I'm not 100%, but I megadosed it to finally get good sleep and my stress response has been magnitudes better ever since. GHB is also known to increase allo and progesterone by 3-5 fold. Study below.
GABA(B) receptor-mediated increase of neurosteroids by gamma-hydroxybutyric acid. - PubMed - NCBI
For some reason 5ar in the brain is messed up from taking finasteride. I also did TRT and even took things like Dianabol. My sex drive was CRAZY high but my cognitive health was TERRIBLE. Zero focus, brain fog, no ability to think clear. Seems to be that the higher blood T and DHT is, the worse the neurosteroids are.
Things that help with brain 5ar are:
Caffeine
Glycine
GHB (potentially)
Anything that acts on the GABA A receptors really...
Currently my routine involves clearing the gut, cleaning the liver and nutrient density from raw animal products.
5a-dhp once in a while
GHB to sleep once in a while
Coffee enemas
MMS/ Chlorine Dioxide
Activated Charcoal
Raw Milk & Colostrum
Liver, etc.
I've made big improvments