I was sad for a long time that WebGL (hardware acceleration) wasn’t working properly on browsers on Jetsons, but today I flashed Jetpack 6 on Orin Nano devkit and it worked out of box with Firefox!
Just beware that on 22.04:
sudo apt install firefox
Firefox is installed as snap, and even 10 year old simple webpage runs with 100% CPU on all 6 cores, but if you install it directly from Mozilla PPA it runs nicely!
Awesome new year present!