Not to be too disrespectful because some questions are genuine but it seems to me that an aweful lot of people try to construct examples of misuse of includes and then cry about errors it would cause.
That behavior is equivalent to standing in the kitchen and figuring out that knives can’t just cut bread but also your arm. And then cutting your arm. And then proudly showing your cut arm. And then arguing knives should be prohibited.
How about not cutting your arm?
Just because Julia allows you the freedom to be a bad programmer doesn’t mean you have to be one. There is nothing wrong with includes. If you desire a simple way to import single files in their own namespace, then by all means, demand just that. But don’t equate that to includes being wrong or harmful.