The article is crap, but it is correct in that you don’t need to use airplane mode. I would, however, advise to still use it purely to preserve battery life of your device as otherwise it will very aggressively keep scanning for networks and drain it.
Meh - flights have USB ports now if your battery is low.
But that’s just a waste of electricity then? And battery health?
Unless you’re really into flying the effect is minimal
It also costs you nothing to disable it. And if everyone keeps it disabled for all their flights, it’s not minimal anymore. So I don’t really see the problem here.
Imagine the savings if all of those people just didn’t fly! lol
That doesn’t change that disabling cellular makes a difference, so I don’t see your point. Just because something’s not perfect, doesn’t mean it can’t make a difference.
It just makes such a tiny, insignificant difference that it really doesn’t matter one way or the other.