At first I tried setting it up with a keyboard, mouse & monitor, but it was a little fiddly to get everything usable.
I had a USB-C hub from a macbook with PD + ethernet + hdmi, but I couldn't get the hdmi display to sync.
So I got another usb-c hub with ethernet + dp (+other ports) and that worked.
amazing: my phone desktop showing up on my 4k monitor!
So, that was pretty cool, but I still had a lot of fiddling to do - like which display the app comes up on, and how to switch things around. Also sometimes the display wasn't recognized when I wanted it do - I think I had to reboot with the display plugged in, because hotplug sometimes didn't work.
(There have been software updates since I tried this - it may be better now).
However, at the same time I ordered the second hub, I also got a $15 USB-C + PD + ethernet dongle.
Turns out that was really what I wanted. Let the phone be a phone, sit there charging and ssh/scp into it from my regular system. I can access the entire filesystem.
All of this really drives things home about Apple.
When the iPhone came out, apple was breaking new ground, so people even accepted web apps, because before they had nothing. And with quality/security, the app store made sense.
But after over a decade you realize that the apple ecosystem is more about control.
Why can't I write my own apps (without asking permission/eula). Why can't I run my own apps without either signing up as a developer and paying, or renew some certificate every 7 days? Why can't I plug all the things into USB and use them?
Apple has mindfully denied a lot of utility for their users. I thought maybe the mac usability would trickle over to iOS, but it seems the iOS lockdown has trickled over to the mac instead.
EDIT: wait. Let me say "Thank You" to the purism folks for doing this. It took a few years, but this phone makes me really really happy. I figure in a year or two it will let normal folks happily run their lives ios/android-free.