`_modules.args` is not respected

I am not sure why, but values from _module.args cannot be accessed by modules in modules/nixos

Placing this module in modules/nixos

{ lib, config, ... }@options:
{
  time.timeZone =
    let
      log-options = lib.trace (lib.attrNames options);
      log-module-args = lib.trace (lib.attrNames config._module.args);
    in
    log-options log-module-args "UTC";
}

and then running nix eval .#nixosConfigurations.my-system.config.system.build.toplevel gives this result

# modules get these arguments
trace: [ "_class" "_prefix" "channel" "config" "format" "host" "inputs" "lib" "modulesPath" "namespace" "nixpkgsModulesPath" "options" "pkgs" "specialArgs" "system" "systems" "target" "virtual" ]
# but there are also these arguments in `_module.args`
trace: [ "baseModules" "extendModules" "extraModules" "inputs" "moduleType" "modules" "noUserModules" "pkgs" "utils" ]

As we can see, nothing except inputs and pkgs is passed to the modules

mre.zip

Start with the module setup under modules/nixos and reproduce the reported behavior using the provided MRE and nix eval command. Compare the arguments exposed to modules with config._module.args, then verify that the intended _module.args values are available to NixOS modules without losing the existing behavior.