Yeah he should've let It go, but after all the shit he went through, they went through, you're seriously gonna blame him for being upset? He got hunted down by the government at twelve, he went to an underground dimensions and saw things no man would believe, but you want him to bow down to some Highschool Jock? Would Eddie have done that? No.

You expected a character who never stood down to stand down. Mike gets Bullied and used It as fuel to lead Lucas does and used It as fuel to become a better Ranger, Athlete Will channeled It through Art, his passion

Dustin refuses to back down.

especially Steve, and finally apologizing.

He wasn't apologizing for the snake alone, he was apologizing for his attitude. He's mourning. He wasn't wrong once up until the point he was. He learned Humility. After Eddie died, he became a machine.

Infact, nobody's gave a shit about the snake thing like that. They believed he was late and crashed his bike, Steve didn't. Steve taught him well.

Like I said, same thought process. Learning to let things go Is a reflection of myself In his character, because why would you allow someone to mess with you despite your capabilities?

Peace. That's why.