I am testing the code with Swift Playground app on the macOS (from App Store), seems to work but the "image" comes as icon.

UPDATED 10 March 2022: Apple seems to release new version of Reality Convert that works again with Blender GLB! Released March 7, 2022 Build 1A51 Compatibility macOS 11.3 or later

With latest macOS Monterey, the path is failed again even if I use USD.command Error: failed to import pxr module. Please add path to USD Python bindings to your PYTHONPATH