It very much depends on the pair of headphones and on the hardware of the phone.

My LG phone is a beast. Sure, it's not quite the same audio power as a headphone amp would give, but the audio quality and convenience is fantastic.

It still degrades audio quality and that's an area I refuse to compromise on.

The smartphone is not the expensive part of my mobile audio playback setup, I expect it to be compatible with the standard playback interface of wires.

My headphones (wired) cost more than a smartphone and I expect my handheld device to be compatible with them. I'll rule out buying models based on this feature.

But there's very low likelihood that a battery will need replacing within the first 20 years.

That doesn't seem relevant to my ask of clarity on the second point that doesn't involve accidents.

The standard safe estimate is ~⅓ reduction when temps are around -25° to -30°, but it varies by car as to how much each degree affects that particular battery design.

You can use abetterrouteplanner.com and put in actual drives for different car models and in the settings you can set temperature, headwind, etc...

I'm trying to say that location count is more important than stall count. Stall count is still important, but a wait is a minor inconvenience in compsrison to not being able to travel on the north shore of the St Lawrence too far north of Baie-Saint-Paul because all the northern charging stalls are concentrated in that one location

It makes no sense to replace 75% of the infrastructure.

This is tragic. The infrastructure for CCS1 far exceeds NACS on a location count basis and having manufacturers switch to this plug type is anti-progress.

12,000 superchargers is counting stalls, not locations. Why are we counting fuel pumps instead of gas stations? That's not how strong network coverage is defined.

There's less than 2,000 NACS DC fast charging locations in the US & Canada but there's over 6,500 CCS1 DC fast charging locations in that same area.

You can see the lack of infrastructure NACS offers on a state-by-state basis here: https://public.tableau.com/views/EVFastChargingPlugStandards/PublicDCFastCharingPlugs