My HTPC is running Bazzite and boots into Steam big picture mode. I watch media using Kodi and control everything using a Sofabatton remote.

This setup is almost as seemless as when I was using an Nvidia Shield and a Logitech Harmony remote.

The keyboard and controller are not needed, except for gaming.

The only negative I've found, is that I've not yet worked out a way to power on the PC from the remote.