As of this month, Sketchfab can now handle native Blender 2.8 .blend files. I have updated and re-written parts of the add-on to take advantage of this. I do have a few issues with Sketchfab’s implementation though.
1. If you set an object to hide in viewport, it will still upload.
2. If you set any object to be disabled in viewport or renders, uploads to sketchfab will fail!
Hopefully they will fix those issues later, but I have done my best to work around it so that everything will work smoothly.
