Having to notarize your own software is giving one company total control over you and your future. It is unacceptable. I do not develop versions for macosx since notarization anymore.
"One day," Apple could do anything. One day, they could totally prevent installing things that are not notarized. One day, they could entirely prevent non-AppStore, non-sandboxed applications from running on macOS. They haven't, but they could and indeed all signs point to these being on the very long-term roadmap. Does this mean you stop writing Mac apps today?
This has in fact happened: https://blog.charliemonroe.net/a-day-without-business/