I hate to burst your bubble, but Anton Babenko's terraform modules are extremely popular. The difference here is that he added a input with a default value to a specific release version. Generally, if you're using terraform professionally you'd either fork or mirror the module and pin to a specific version. In such case this change would not affect you. If you had e.g. something in development calling 'latest' version of an impacted module you again would not see this. It's an optional argument that defaults to a value causing no outward change in behaviour.