Author here: I am daily driving a Purism Librem 5 currently (in order to write a proper review about it).

I have carried the PinePhone as a secondary device for a long time before, and I tried it as a main phone for a week twice (late 2020, April 2021) - things were too crashy for me back then (and the slowness admittedly annoyed me, too).

Many people do though. Personally, I've been using a Librem 5 as my daily driver for more than two years now and couldn't be happier despite of some quirks.