As it turns out, this assertion was somewhat validated when I discovered that you can get anyone’s true email address (Google Account) if they are hosting their email on Google Workspaces from their alias, even if the alias is not on the same domain. What this means is that as long as you have a collection of email addresses that are hosted on Google Workspaces, you can easily verify whether they are the true email account or an alias with this API, and if they are an alias - get to the real account behind it.