That maybe in the far future but for now, and being a hot topic at this time in the MC, iron sights will be taught at entry level. I can only say until they have a near impossible to destroy optic or laser tracking small arms are standard issue...don't put those irons away. BUIS are popular for a reason. It's like saying you don't need to teach map & compass because we are so GPS dependent.
Back to my original post: what would you zero at with.... Zero is like a base line and I was curious to what people would zero at being that you just took it out of the box. Still no answer from any of the CQB guys.