I do have a replaceable battery, headphone jack, SD card slot and screws. I do some Web browsing, reliable calls/SMS, playing music for hours. It's starting to get a bit slow and old over the years, but I still see no reason to switch to any less user-respectful device.
What I worry about is whether there will be an upgrade path within the next decade. So far there was the Liberux campaign, and it failed. I already had to use an Android device as a secondary phone for 2-3 years before I got my Librem 5 because the N900 eventually aged too much to be usable for the Web and there was nothing on the market that could properly replace it. I don't want to need to do that again.
PinePhone is a low-end device with no support other than what you get from the community. It was a good option for those who couldn't afford anything else and wanted to invest their time and skills instead of money, but there are no miracles. The community of people who did actually care turned out to be small enough that you can still find some low-hanging fruits to work on today - and that's the thing I wanted to point out. I see lots of people who talk about how much they want Linux phones, but it's a tiny subset that actually acts like it. They won't fall from the sky - not when the sales of existing devices can't finance developing their successors.