Update "How do I uninstall Tor Browser" in macOS
https://support.torproject.org/tbb/tbb-28/ says that all you need to do is find the directory you installed tor browser to, and delete that.
But that isn't true on OSX: there, you need to not only delete the tor browser directory, but also find the profile data directory in /Library/ or something and delete that too.
(The profile data directory is separate because Apple's signing requirements mean that we're not allowed to modify the thing that got installed with a signature.)
GeKo is a good person for asking how exactly to describe this /Library/ thing.