They don't want to do the switch now because they don't want to send the wrong signal to accessory makers. They want them to focus on Bluetooth and wireless charging.
If they knew it'd take this long to get here, maybe they'd have switched to USB-C at an earlier stage. I know there were many blunders and delays with things like wireless charging and Bluetooth 5 audio. So the situation has become kind of awkward.
The only place I could see this not being the case is in older cars which require plug-in for some features like CarPlay.
But eh, it's an expensive device. An extra cord (also for cheap on Amazon) isn't a big deal.
On my wireless pad that much charge will take a couple hours.
That's fine overnight, but sometimes you need a lot battery ASAP
Funny thing is the only time I run out of juice now is if I did not place my iPhone on the wireless charger straight enough. Apple spoke specifically to this pain so it must be widespread.
Also occasionally when traveling, so combination of long days + higher than normal usage. I've got a battery case for those days that more or less doubles the built in capacity (at the cost of also basically doubling the weight)
I suspect Covid has had a big nerf on battery use overall.
Also Lightning was compact, now the wireless charger going to be bulkier to carry...