As someone who also has to argue about how wrong everyone else is...
I always tell them to imagine the iconic 'slipping on a banana peel' joke. Sometimes I make them draw it.
If you peel from the stem, it would never look like that. We have so many references that I challenge anyone to show me any media from any time period that shows the banana opened from the stem.
People learn the stem way as children because it's easier with limited motor skills and just never give it up.
Yeah, it’s easy to discard if a little bananus bothers you. But I ain’t a’feared.
Also, I’m usually making smoothies so it’s not much of a concern.
Pro Tip: another advantage of peeling the gorilla-approved way is that you don’t have to separate them when peeling multiple. I usually eat a couple one-offs while the bunch is ripe and then, before the rest get brown and mushy, peel the rest to freeze for smoothies or banana bread or whatever. You can just peel several from the bananus side and save the step of separating them.
I worked in a restaurant that served Bananas Foster so that’s actually a pro tip. You may never have to quickly peel a whole bunch at once but cooks, busy parents, smoothie artisans, etc. frequently do.
It's how the other great apes do it too, which as far as I'm concerned is pretty much the end of the issue. It really is one of those things where there's a right and wrong way to do it.