BTW, every one says this - but nobody uses it like a daily driver. Yes, it will work as a spare - with just one app - like whatsapp - but for many poor - they need
1. Uber or Ola
2. Facebook or WhatsApp
3. linkedin to whatever local app
4. youtube
Why dont you try to use it for a week with all your existing apps?
I'm still using a 6s Plus 128GB. I keep thinking about getting a new one, but this one still works great. Haven't found a slow app yet. Everything is still responsive. Screen is still scratch free. And it's going to get iOS 14 this year. Even though it was relatively expensive when new, it's probably been one of the best values in tech I've ever seen. And yeah, it's a daily driver. Use it for everything.
None of these apps are essential even in the developed world where anyone who uses Uber regularly can probably afford a newer iPhone, these apps also run just fine on a 5s/6 which can be found for under $150 without much issues.
Literally millions of people use these phones as their "daily driver." They work perfectly well. Maybe people are still using them from when they were new, other people buy them used, or buy the iPhone SE, for exactly the reason you suggest: they don't need the latest and greatest.
Why dont you try to use it for a week with all your existing apps?
If it works as good - why would anyone buy newer?