And with all due respect (and I do respect you) smaller caliber bullets don’t do nearly as much damage as larger caliber, heavier bullets.
And elk are harder to kill efficiently than most deer, antelope or bunny rabbits. At least, they are when you shoot them with small caliber, light bullets.
As we all grow older and our experience grows, we often modify our views based on our past experiences and input from people we trust. In my case, I know a fair number of long time African Professional Hunters (PH’s). They see more game taken in just a few years than most of us will shoot in our lifetimes, so I give a lot of credence to what they say. Universally, these PH’s believe ‘bigger is better’ and generally eschew small caliber, light and fast bullets. They value heavy for caliber, stout bullets at moderate speeds that penetrate deeply. Most do not want to see any client hunter arrive with anything smaller than a .270, which by the way is the smallest legally allowed caliber in most countries not called South Africa. They love it when people show up with a .30-06 or .300 magnum paired with a .375.
So, maybe my views are skewed by my own experience and that of many friends. To me, their experience speaks volumes. I don’t necessarily give the same weight to people I don’t know and haven’t hunted with.