Glenn Fricker did a video where some of our plugs are used today and holy hell the catalina users are having install issues.
Its not as simple as people make it out to be "just codesign it" They's singed, and its not a simple process, its 99 dollars for entry but in order to actually do anything sensible with it its more like 500 per year
And it still doesn't work.
Sadly these same installers were working even on catalina not so long ago.
What a nightmare
Here's codesigned for around 500 dollars per year. Worked even in catalina a few months ago: