https://github.com/TermiT/Flycut mentions needing System Preferences -> Security & Privacy -> Privacy -> Accessibility access; how is Maccy able to function without it?
Aside: even after getting this prompt, I don't see an option to choose Maccy in the System Preferences -> Accessibility menu, hmm...
PS: I'm a huge Flycut fan – clipboard management massively improves my life, and it's the best clipboard manager that I've found.