Peter's life could be viewed as dark. But the beauty of the character is that he does not succumb to it like, say, Bruce Wayne. He is too grounded and normal. No matter how horrific (or melodramatic) things get, he maintains an optimistic, oddball outlook that some would call naive or foolish, but I like to think is resilience.
For all of Raimi's trilogy's problems, it captured that somewhat better. Peter loses his uncle, he (accidentally) lets Harry's father die, he tells the truth to Aunt May about letting Ben die and feels her quiet wrath, he watches Harry die, etc. but the tone is never dark, but one of resilience and ultimately a love for life, even if there is the quiet sound of sadness and the lonely, noble trumpet in the background.
Raimi got many things wrong, but being able to balance Peter's life as a soap opera with tragedy, but also one of joy and optimism is one of the things he got very right.
TASM is overly bleak and cynical. It even features a scene where they try to make the audience wonder if Spidey will murder a thug (he covers his mouth with webbing and watches him suffocate with a head turn that makes the eye-lenses appear monstrous and otherworldly). It is not the character.
And they have seemingly dropped it form the sequel for a reason.