You'd think so, but you make something then it doesn't work on a new version of windows, or it doesn't work on a new version of python because one of your dependencies isn't available for that version of python, or it doesn't work on linux if it doesn't have a specific version of packages, or it doesn't work on the browser because they're ditching manifest v2, or it doesn't work on android because you need to provide more personal information or your app will be unpublished.
At this point I have a feeling "perfect" software only exists in hardware like consoles where updates just stop one day.