Bring on that 800x600 goodness.

I blame that 100% on Nvidia. Buying an Nvidia card these days for Linux makes about as much sense as buying an iPhone to run Android. Linus summed it up well https://youtu.be/iYWzMvlj2RQ

The number of applications that run through xwayland is shrinking every day.

X is dead.

You could run jellyfin on your desktop and use that to stream shows to your tablet. Or VLC works for connecting to network file shares and you could play from that.