The Sun Also Rises -Hemingway

So I just recently finished The Sun Also Rises. And decided to skim some things online to see what other people got from it.

Was quite surprised to see people saying the protagonist Jake was physically impotent from his briefly mentioned war injury. And that was the major hurdle preventing him from being with Brett Ashley in the way she needs.

OK. Maybe. But what did I miss? Where did that come from? I think I read a story about an emotionally damaged, socially nice, man trying to process his way out of his love for Brett Ashley and partially succeeding, while partaking in a comfortably hedonistic and mostly pointless lifestyle. Jake is in many ways portrayed as impotent and powerless. Brett keeps one guy she doesn't love hooked for the money, has one guy caught in her influence who she briefly wanted and it became a problem, had some feelings of love still for Jake, but also lusts after others (bull fighter). Her character pursues and gets what she wants until she doesn't want it anymore. That and strong drink seem to be her primary motivations. Still she is charming and guys can't help falling for her. The guys in the peer group are for the most part aimless thrill seekers who get by with fancy meals and excessive drink. A code of class makes them friends and codependent but further neuters their ability to express themselves until the very end. And in Jake's case it seems quite clear the drink is a coping mechanism to tolerate all that, and as soon as he's out and doing what he wants, it usually involves sport or exercise and moderate, enjoyment drinking as opposed to getting tight.

Opinions?