Is this a thing? i.e: a FOSS Linux system but with pre-configured pirated apps.
Imagine installing Linux and having Microsoft word, Adobe products, or some games pre-installed without pain.
I mean, you kind of just described two things that are specifically hard to get working properly on Linux in general - MS Office and the Adobe suite. You’re better off using FOSS alternatives, like LibreOffice and Krita or GIMP. Otherwise, you’ll need something like Lutris as a Wine frontend to install Windows apps - and at that point, you might as well just install stock Linux, get qBittorrent going, pirate what you want, and install as needed. Plus, I don’t think I’d trust the security of a modified version of Linux for piracy. That’s just asking to be exploited.