I use wireless charging extensively with my iPhone 8 and it’s been transformative. To the extent that it annoys me that my iPad doesn’t have wireless charging. the ability to have it trickle charge whenever I drop it on the stand just makes it so easy. BUT, I’ve also had many times in the past when I’ve gone out for long afternoons of playing Ingress or Pokémon Go, which eat batteries. The solution that everyone uses is to carry an external battery and a cable, to keep the phone running long after theninternalmbatterynwould have run out.
If Apple removes the ability to charge from an external battery using a cable, it’s going to be massively annoying, and may effectively kill some uses of the phone. If it becomes a matter of charging through a magnetically attached cable connected to the Smart Connector, that might suffice, but nobody who needs to use the phone for longer than the internal battery can last, is going to put up with holding a Qi charging pad against the phone while they’re walking around.
Again, I love wireless charging - when I’m home or at work. Where I can have the (comparatively slow and inefficient) charging pads sitting around and plugged in, and habitually drop my phone on them to trickle charge. But wireless charging with a pad constantly held against the back of the phone (and losing power from the external battery in the transfer process) won’t work while walking around with a battery pack in one’s pocket.