The example in the introduction is a case of over-engineering and should be avoided. But the article mentions when a project should be over-engineered and the

The example in the introduction is a case of over-engineering and should be avoided. But the article mentions when a project should be over-engineered and the examples used are for existing projects that need to scale. This is not quite over-engineering IMO, but simply responding to the needs of your users now or in a foreseeable future.