If this is not enough I suggest they put more glue on the sensitive to Helium areas, I heard Apple glue is magic.
Sure, it would be users that need to demand it and they do not. So they get less capable products in the end.
I once screwed with a tube colour tv using a magnet and the colours were distorted in that area of the screen until I unplugged the tv and left it for a few days. Induced currents from the magnetic field or changes in the electric or magnetic fields might not be all that good for devices that run on milliamperes or less.
And somebody has to pony up a bunch of iOS devices and some He to run blind controlled experiments. I suspect that “operating in an area that could pull fillings out of teeth” voids their warranty.
May I suggest an hypothesis (I would be happy to hear from other people whether this might make sense. I didn't see this possibility mentioned by anyone on the Reddit page) : of course Apple is very secretive about their implementation details, yet as far as I know they are the only consumer brand who implemented Ultra Wide Band at large scale (in a quite innovative way, they can be praised for that !). See https://developer.apple.com/nearby-interaction/
I suspect that UWB implies having an RF receiver and antenna which are "wide open" in terms of frequency selectivity, which means that in the event of a strong RF pulse in the spurious domain, more energy might enter in the device compared to other brands. Maybe that's an explanation why Apple devices (and only those) were burned by an EMP ?
It was helium that disabled the phones, not an EMP. On top of the fact that this occurred, AFAICT, before Apple was putting Ultra Wideband into phones (iPhone 11 was the first, 2019).
Spoiler: Helium leak.