I imagine it’s about user experience (you are far more likely to have both phone and watch together than iPad and watch), but if you have a good use case, let Apple know https://www.apple.com/feedback/

Usually you need to go back up the stack trace a bit to understand why the system code might have thrown an assertion. It looks like the last time it was in your code was 3 Africa #2 0x100c630ec one-time initialization function for videos + 152 (VideoListItem.swift:21) and the error message Africa__2/CodeableBundleExtension.swift:14: Fatal error: Failed to locate video.json in bundle. should be a big hint too.

This seems to be working for me (this is on iPad) but in general, file a bug against the App Store https://feedbackassistant.apple.com