Pirated Substance Alchemist, designed a material that I liked for a project I'm working on, everything's going great.
Got greedy and decided to see if an update would break the licensing. It did, and so I uninstalled their new version and went back to the pirated (but slightly outdated) binary.
Now I can't open the project because it's from a newer version of the software, but I also can't delete it because nowhere online does it say where the default project is stored on macOS.
Fuck.