There was an issue with SSL certs for https://repo.adobe.com but that was resolved by saving the cert from the site and adding it to the maven's java key store.
Subsequently, I was able to create the archetype 13 based project within Eclipse as well. The Configure Archetype Properties step requires completing all Parameters. Parameters like confFolderName, cssId, and componentGroupName are left by the wizard. The blank values can only be seen when you hit Next to Select or Create Server tab and then return back to Configure Archetype Properties step.
It appears that either I am not using the right AEM Development Tools or the AEM Dev Tools is not yet compatible with archetype 13 parameters. I git the latest and greatest AEM Dev Tools from AEM Developer Tools, so unsure what is wrong. Anyway, I am glad things have progressed.