Thanks for the follow up and for reaching out in the first place. We completely understand your situation.
In term of timeline regarding “arm” support, we are currently focusing on arm64 support for macOS.
See Support for building/testing/packaging Slicer on Apple arm64 · Issue #6811 · Slicer/Slicer · GitHub
Once this is done, we will be better positioned to tackle arm support for NVIDIA Jetson.