Update I have come to a decision. Thank you to all who contributed suggestions. Please feel free to keep the discussion going to help others.
I mean, the 6a still has 3 years of support left so whilst it is older it is hardly at the end of its supported life.
Not everyone can change a battery in a phone, I can but I would still rather not do it on a phone that isn’t really anything special and whilst yes they could feasibly last that long I think in practical everyday use application by the time you are getting to three years of daily use it will be beaten up and physically not in great shape any more for your average user.
My pixel 6 is about 3 years old and the only wear I can see on it is a single little micro scratch in the top right corner of the screen that I can’t see without a light reflecting off of it. I don’t bother with a screen protector, just a thin silicon case. Battery is fine for about 2 days of normal use even though I regularly use a wireless charger.
