You've mentioned the Pinephone a few times. I have one also. But the thing that stops me daily driving it, is not that it's underpowered, but that sooner or later I'll miss a text or a call. As far as I'm aware (please correct me if I'm wrong), there isn't a single pure Linux phone where texts and calls are totally reliable.
So that only leaves us with UT, Droidian/FuriOS and Sailfish. They're all good, and all work reliably for phone usage. I did daily drive Droidian (sorry) on my Pixel 3a for about 6 months, but I ended coming back to UT, as the ability to use and scale any Linux app isn't all it's cracked up to be, and UT has some really cool native apps!
Ultimately, UT does everything I need, and most importantly, I can depend on texts and calls working (I don't use social media). As for browsers, I can't see why more people don't use Firefox via Libertine. It seemed like everybody wanted it when it didn't work, and now it does work, nobody wants it! And it's far from being the only Linux app that works in Libertine.