Not just that girl cried, but that she felt and believed that moment. And besides her, the theater applauded. Meaning they felt the same thing. Webb succeeded in the moment of making a theater of 700 people cheer. That's the emotional response they were looking for and they got it.
Was it cheap? I don't think it was, at all. You do -- so... here. we. go.
This is just like saying:
"It's so contrived that we start the movie on this kid Peter Parker and he is the ONE GUY in New York City who is in that lab when a spider gets free and bites him on the neck and gives him power and he becomes a super hero -- wow, I guess it's lucky we were following him from the beginning...."
Yes, it's contrived that the boy who Spider-man saved has a father who happens to work construction in New York City. But with all of the "fact is stranger than fiction" coincidences that happen in day-to-day life, it's not entirely impossible.
And it wasn't like these guys were all sitting in the cockpits of the cranes... He made calls, scrambled around and made it happen. It's not all together unbelievable that there would be men at various construction sites at that time at night, as a lot of that kind of work takes place late as to not interfere with traffic and the work day.
Spider-man wasn't shot in the leg for that first hour that we see him jumping and leaping. He wasn't slashed down the chest from his encounters with the Lizard. He wasn't physically beaten, exhausted and alone. He
could swing in this condition, we SAW that he was physically capable of swinging, but not well, not fast. I believe he crashes into a fire escape and realizes just how far from Oscorp Building he is, and just how hard the trip is going to be in his current state.
So the cranes are moved in a position that allows him to swing non-stop, without having to land or change direction (putting minimal damage on his fatigued, injured body).
How is people helping people an "ultrapatriotic feel good moment?" Is good nature a trait that is exclusively American? No. For sure it isn't. Is it overtly American and patriotic because some of the crane operators had American Flags draped or hanging on parts of their cranes? Many cranes have flags hanging from them. It's an incredibly common practice, especially on cranes in New York City in a post 9-11 world.
The father never had a negative opinion about Spider-man that I saw in the film. He was in need, shouted for help, a masked avenger answered the call and he asked, "who are you?" That was the extent of it.
We don't know what happened off screen. Did the father look for a way to thank this faceless man? Did he talk about the incident with his work buddies, speaking out against the general consensus (based on what the police were saying) that Spider-man was an outlaw? Who knows? But that's not what's important. What's important was that he saw that this guy needed help and he wanted to repay the man who saved his son.
It goes to what Ben says, "when you can help someone, it is your moral obligation to do so." It's a theme of the film -- a theme that is not exclusive to Spider-man himself.
The police force backs off of Spidey because they are men following orders. Peter changed the heart of the boss and thus the troops stand down.
It doesn't matter that not everyone in New York had their son saved by the wallcrawler. What matters is that one man did. And had Peter continued acting like a selfish vigilante, and not a selfless hero, he never would have saved that little boy -- and that boy's father never would have gotten his friends together to lend him a hand when he needed it most. It's not luck -- it's a good deed paying off.
The dinner table conversation at the Stacy house plays out like a microcosm of the city. Some people love him and think he's doing something necessary (Peter), some think he's cool (the youngest son) some think he's dangerous (George). It's safe to say that the Stacy dinner table wasn't the only dinner table discussing an internet phenomenon and superhero that recently appeared in New York.
The moment was earned. We are witnessing a hero, who to this point has been misunderstood. The police want him for questioning, and have issued a warrant for his arrest. This is a hero at the end of his rope. He is trying to stop a man who he considers a mentor and a link to his lost past. He is trying to save the girl he's crushed on his whole life perhaps. A girl who actually really likes him. A girl that through his actions, he put in harms way. He's shot, beaten, broken and exhausted.
When the cranes align in front of him it shows him that even though there is this much on the line -- and it feels impossible, he's not alone in it and he
can do it. He webs his open wound and summons all of his strength and runs towards the Oscorp Building, needing to save the day and fulfill his moral obligation of using his powers responsibly.
I'd love to respond to your points. You've been a favorite poster of mine for years and I've more often than not agreed with you... It might be more fun disagreeing with you, as I like making you type in all caps. (PS: I'm glad you like my sarcasm and humor, even if it was a most cursory compliment).
How would you know if my post was of that nature unless you read it?

(I assure you, it's not).
-R