No, you told people just to castrate themselves if they are considering dutasteride and you didn't provide any links. Every single time that I go on a thread involving hormonal manipulation we get the same "catty" remarks. Baldness is hard enough without bringing up castration as a background consideration which only MtFs are likely to consider anyway.
I still mostly identify as male but people who haven't been on HRT/Estrogen have nothing to compare to regarding the value of testosterone vs. estrogen on a daily basis. The sex is better; the youth effects are simply uncanny and unprecedented and except for penetrative sex as a top, there are plenty of options for companionship. So in terms of health, many/most MtFs on HRT are far healthier and far younger looking so no, this has nothing to do with "messing" up anyone's health. In terms of retin-A, I am also using that on the temples and crown and I commend you for trying that.
My hypothesis might be wrong but I believe that anyone trying to regrow or even improve their hair quality in terms of length, texture, manageability, etc. without estrogen and fairly substantial amounts is unlikely to find anything but frustration. I have used essentially everything going back to 1988 and my first Rx for minoxidil and I also have the perspective of using different meds in both a female context and a male context.
I also might direct people to the
@bridgeburn thread and his claims that even with a regimen like mine, which for me is admittedly, chemically castrating, that he had no/few issues related to penetrative sex with his girlfriend. In my own situation, it took a lot of titration upwards on E and Duta before I lost erectile capacity so it is not something that happens overnight. The problem is that gyno starts immediately while hair improvement requires (apparently) far greater amounts of estrogen circulating than does breast or buttock development. So to the extent that you are a cynic, you are correct in my estimation that neither finasteride nor Duta is likely to regrow hair. They are pretty damn good though for maintaining the crappy XY hair that most of us have. Goddess bless.