It works in one direction: sending files from my Pixel (GOS) phone to Linux.
But the UX could be better. When I send a file, no notification is shown on my phone. But when I look in my Downloads/ folder, the file is there, so that's good.
Now, when I open the kdeconnect-app on Linux, it cannot connect to my phone. Even if the app is open on my phone. I see the phone, but it says "disconnected".
So, as it stands, I put this in the "barely works, needs more love from developers" category.