This is very deliberate: included scripting runtimes for Python, Ruby are only for compatibility with legacy software, not for any new development. This goes back as far as macOS 10.15 from 2019 [1].

They still haven't gotten around to actually removing them (probably don't want to deal with support/complains), but keeping versions pinned to ancient versions will naturally nudge developers to take care of their own runtime requirements. (They do the same with bash, perl, ruby.)

[1] https://developer.apple.com/documentation/macos-release-note...