*looks at all the TOS and TNG films* Seriously? What is a Trek film "supposed" to be? There is so much variety to be had in the Trek story universe that declaring something is not "supposed" to be Star Trek is still one of those things that confuses me to no end.
Hahaha...oh, wait, you're serious?
Yeah, I'm sorry, as long as "Spock's Brain," "Profit and Lace," "Rascals" among a long list exist Into Darkness doesn't cracked the top 50 for me.
Seriously? Star Trek films have been stealing from TWOK since First Contact. This is not new with Trek films. TWOK is considered the greatest Trek film of all time and Khan the greatest villain. The writers wanted Khan back as soon as possible.
Now, the reactor scene will be mixed for everybody, but I had no issues right up until the Khan scream. Which, is like 2 seconds so I give it a pass.
But, TWOK's shadow is quite long and people insist on comparing it and keeping wanting to capture their "Khan" moment in the Star Trek world. So, yeah, why bother stealing from TWOK? Because its been lauded by fandom for the last several decades and treated as a god amongst Trek fandom.