The important advantage, IMO, is that it isn’t sending your data to Google or Apple. I plan to make my next phone one that runs Linux, and I’ve never wanted to plug a screen or keyboard into my phone. I use a computer for anything I’d do with a monitor and keyboard. My phone is for making and receiving phone calls.
The Fairphone 5 is basically fully supported on PmOS, only the internal speaker still has issues.
And a Linux phone that you can’t connect to an external screen and keyboard loses one of its few real advantages over Android.
The important advantage, IMO, is that it isn’t sending your data to Google or Apple. I plan to make my next phone one that runs Linux, and I’ve never wanted to plug a screen or keyboard into my phone. I use a computer for anything I’d do with a monitor and keyboard. My phone is for making and receiving phone calls.
This is why phone manufacturers must be forced to open the bootloaders so we can have real competition! Everything is stuck in Android otherwise.