Listen
[NOOK-yoo-lur] is a perfectly fine way to pronounce the word. It is a legitimate variant and in fact how I learned to say it, growing up. If you think that getting snarky over this is the way to fight a culture war, then you personify everything that's wrong with this side. Shape up and focus
Nukular isn't the problem
What bugs me is when that word is used in a sentence like:
Mispronunications are the very least of Mr. Bush's offences. And the least actionable.