Because the tools are already installed.

The 'connect-viserver' command was found in the module 'VMware.VimAutomation.Core', but the module could not be loaded. For more
information, run 'Import-Module VMware.VimAutomation.Core'.

Execution policy it's prohibiting them to run.

You can try it, set the execution policy to restricted, and try to load the command connect-viserver.

Waiting for your response.

Br!