His hairline seems just fine... No problem there either.
Have you googled "finasterid/propecia ruined my life".... pretty sad stories... Some men are quite brave if they eat those even after they have read what it can cause.
I take it for 5 years and a lot of my friends too. Nobody has problems. You can find on the Internet every horrorstory refering to almost every drug or procedure. Check out the Studies and the odds. Especially a drug that you take for years... when they get suddenly problems the first thought is that it must caused by this drug although there are no causality. They blame this drug for their problems and write articles in the internet. So when you google then you get hard biased. Then you come up with your google storys in another forum and reinforce the bias for others.
When you have alopezia then the only proven drug that can stop the hairloss sustainable is finasterid. When the hair is gone you cant get it back with fin. Therefore it is crucial to take it when you still have your hair.
Dont get me wrong. Finasterid is no candy. Therefore you have to inform yourself first. Go to a few dermatologists and read the studies.