It doesn't work on Firefox 147 (or maybe on my setup, many things are affecting this). I see many errors and warnings about shaders in console, a some fragment:
WARNING: Shader Did you use #pragma only_renderers and omit this platform? WARNING: Shader If subshaders removal was intentional, you may have forgotten turning Fallback off? ERROR: Shader Shader Graphs/PatchTerrain shader is not supported on this GPU (none of subshaders/fallbacks are suitable)
So, thanks for uploaded a video. It looks so beautiful!