In my opinion, if 'no hair sux' is not happy with his receding hairline, he should go for the HT. I know that I wasn't happy with my receding hairline, even though many people told me that I didn't need an HT. I ended up getting two HT's and am very happy at the difference that they made. In fact, I'm thinking of an FUE procedure to fill in the cracks!
As previously mentioned, the chances of Propecia helping a lot on hairline aren't always good, which I believe is the area that 'no hair sux' is concerned about. I also believe that the same goes with Rogaine. Like Propecia, it is known to work better on the crown area.
So, in my opinion, 'no hair sux' should continue with the Propecia and also consider getting an HT if he's not happy with his current situation.