It wasn't the Spidey quips. It was more the cheesy one liners coming from Electro, the stereotypical German mad scientist monitoring Electro, Paul Giamatti acting like a cartoon character and Max Dillion talks to himself in a very cartoonish way. In this same movie we have a girl falling down a clock tower and hitting her head against the concrete. I'm not saying having light hearted moments is a bad thing, I just think they over did it and it became incredibly cheesy and downright stupid.
You said it's not like someone died and then 2 seconds later someone is doing a silly dance?
Gwen dies, very shortly after we see Rhino acting like a goofball in the streets.