This. Majority of both Apple’s and Mozilla’s stance are based on the lack of standards for the PWA. The final checkboxes for both browsers have unchecked usual

This. Majority of both Apple’s and Mozilla’s stance are based on the lack of standards for the PWA. The final checkboxes for both browsers have unchecked usually reflect the lack of clear specs from Google (since they shipped publicly before draft in W3C) pushed to help their own agenda.