I’ve had this for a year and a half with a PinePhone. I just don’t use the docking ability that much because:
1) Forwarding X11 to a desktop is easier (and all the apps run on X anyway)
2) Since it’s just Linux all the apps can run on a desktop just like the phone, all my stuff is synced with git or rsync, and if there’s something I need outside the usual folders it’s just an scp away. There’s absolutely no reason to use one particular machine over the other other than form factor and computing resources.
It just makes a lot of sense to have a decent desktop permanently plugged in that you can use without any hassle. Devices like that will kill laptops though, I know it did for me. Of course I don’t think this will happen with Android. Google is way too greedy and they’ll find a way to make it unusable.