I think people just don't know how to view a song like this when it's done right. They group it in with the lames in the game now that depend on these songs. It's still hip-hop, it's a new age way of going about this mood, and Nas did it right. Moderation, throwing a song like this in the middle of an album like this is perfect imo. It's when cats over do it, and make an album full of nothing but "hot summer songs" that make it lame. This song is a banger, and sits good on this album. No complaints here.
"Summer On Smash" is perfect, especially when you put it in context with the rest of the album.
It represents Nas becoming a single man once again & having careless fun. Its the high you get when u break up w/ a female, ur on vaca with your people ,and everything is a go.
He's partying like a grown man and not horrendously compromising his flow.
Almost every song on the album reflects or celebrates a particular aspect of his life. That's how I see it.