When on Software Download pages I receive
We detected that your current operating system is macOS 10.15 Catalina Show / Hide all versions of software downloadsfor macOS 10.15 Catalina
I am running a Mac Studio (2022) M1 Max with macOS Monterey Version 12.6.2.
As far as I have been able to determine, Apple stopped supplying the correct browser and OS version in the HTML request (the information is sent when making a web request). I think they just left it as some version of Catalina.