Not a good thing to mess around with hormones like that...
At advanced age when hormone profiles have naturally migrated toward the typical profiles of the elderly, I’m not sure this is any worse than the alternatives. You’re dealing with a cohort with a very limited number of years left (excluding a statistical small minority) to be physically ‘virile,’ and many of which just have a very limited number of years of any sort. I have a hard time begrudging the elderly their attempts to do something other than slip away into obsolescence and death, regardless of their generation - so long as they’re of sound enough mind to understand what they’re doing, what the trade-offs may be, etc. I suspect younger people turning their noses up at this sort of stuff will not be so strident when their time comes and they’re faced with future ‘treatment’ possibilities.