I feel like those rarer circumstances can be handled pretty easily with a portable battery bank, and also pull double duty for any other USB devices you might have.

With my 14 Pro Max I charge my phone every 2-3 days, and I'm not letting it get down to <20% when doing this, either. I'm obviously not making heavy use of it over this time, but even on days when I am out and about and using it more, I'm never in danger of it running out of battery.

Personally, at least, I'll take the sleeker design vs. an easily swap-able battery. Thankfully, it sounds like the EU law doesn't actually require it be replaceable in a tool-less manner, so it sounds like the type of design the iPhone 14 (non-max) uses will qualify.