The Great Gatsby question

While I can see your point here, Nick is a very flawed character who often neglects to do the things a good man would do.

First off, Nick is the embodiment of toxic complacency. When he finds that Tom is having an affair, he doesn't even think to bring it up to Daisy and doesn't show a single sign of disapproval.

Secondly, whatever is asked of him, he does without question. Nick is a tool used by the wealthy people around him.
Nick is specifically written by Fitzgerald to be a middleman-- an unremarkable pawn and fly on the wall.

Though Nick doesn't actively cause harmful situations, he is quite literally the opposite of an "alpha male," consistently failing to voice his opinions and fading into the background as the events transpire around him. He is a puppy following Gatsby around, hoping he will throw him a bone. He has very little agency over his life as he works like every other twenty-something in NYC and does as he thinks he is supposed to do rather than knowing what he wants and going for it.

So, unless you think "a man" in today's society should be complacent, stagnant, and non-confrontational, then sure, Nick is what every "man" should aspire to be.

p.s. I do love Nick's character and I think he is very interesting to closely analyze. I love how he's there for Gatsby and is loyal to him until the end. I'm not arguing that he's a bad person, just that he isn't really remarkable enough to be good OR bad. He is neither.