Backwards compatibility is actually a bit of a nightmare on Linux. Ironically it can be easier to get old windows software running on Linux than old Linux software.

I've been discovering this on Steam, actually. Square Enix released Linux versions of some games, like Life is Strange or the most recent Tomb Raider trilogy, but they'll crash at the main menu if you try to run them. Similarly, the Shadowrun games from Harebrained Schemes assume that you have a configured .asoundsrc file in your home directory, which likely isn't true if you're on a distro that has migrated to pipewire. The .asoundsrc issue is easy to fix by just making the file yourself, but LIS and TR have to use the Windows versions via Proton to run at all.