Programs in App Store under High Sierra require Big Sur

Hey, just took my first attempt at a Hackintosh, running in VM with GPU passthrough.

I have a Nvidia 1060, so I'm stuck with High Sierra (17G4042) due to driver availability. This would be fine, if not virtually all apps in the app store would require Success' href='/2020/12/install-macos-catalina-on-supported-pc.html'>Catalina or later (basic stuff like Keynote or MS Office for which there must be a version for High Sierra)

I'm aware that High Sierra is EOL by now, but I don't think this is how it is supposed to look like? If this were a linux, I would suspect the package manager is fetching the wrong sources.

Can anyone confirm that this is unexpected behavior?

And if so, what should I do to fix it?

Author: @MonkeyKhan