All I can say is that I have heard this type of argument before, and my personal gains have been fine while using avodart which kills much more DHT than proscar/finasteride.

Since last april I put on 20lbs naturally, kept logs of every single workout, and all lifts went up dramatically. Maybe it does effect some people more than others.

I startred proscar in aug 1998 and avodart dec 2002.