Where is commonly found finasteride or dustaride?
It's widely rumored that President Trump uses it for hair loss, which I suspect is part of why this article was shared, and is being upvoted; this side effect wasn't exactly unknown before this study...
https://en.wikipedia.org/wiki/Finasteride https://en.wikipedia.org/wiki/Dutasteride
But I don't think that this side-effect was unknown. ED / sexual dysfunction is a documented side effect for both the drugs in a significant percentage of the patient population.
So, yes, this study is exploring that side effect, but it's inaccurate to call it "less known".
EDIT: fixed some word salad phrasing.