GNU/Linux phones are general-purpose devices running desktop Linux. Support them if you want to have the freedom to run anything.
Probably depends on your usage pattern. Pinephone works quite reliably for me.
> lasted at least a day on battery
Pinephone fits here
> and had some sort of NFC payment method
Not available yet, but in the works (you will just replace the back cover): https://www.tweaksforgeeks.com/linux-based-pinephone-to-come...
But the way things are going, the open source community might soon have to start designing their own CPUs, as you may not even be able to buy a high-performance CPU within a couple of decades, they'll be proprietary tech that only exists as part of a locked-down platform, like Apple are now doing.
Anything to back this claim up? I disagree here. Librem 5 and Pinephone are getting more and more popular now. The first one is even recommended by the FSF: https://www.fsf.org/givingguide/v11/
> the open source community might soon have to start designing their own CPUs
Like RISC-V?