Now it has come to pass. The new version of the Steam client won't install on anything older than Windows 10 or macOS 10.15 Catalina. That means Mac users can't run 32-bit games anymore ...

Civilization 7 will be available on Windows, Mac, and Linux with each operating system having its own system requirements.

For my Steam Deck M1 dream to be feasible ... a big problem – Apple already has a conversion process for this on Mac, called Rosetta 2, and it appears to have minimal impact on performance ...