But you can see em dashes everywhere (it's harder to distinguish en dashes). As I said above, plenty of software - very popular software such as Microsoft Word

But you can see em dashes everywhere (it's harder to distinguish en dashes). As I said above, plenty of software - very popular software such as Microsoft Word and phone keyboards - inserts em dashes automatically or when you type two hyphens. Also, throughout history I doubt everyday people thought about using em, en or hyphen. It's a detail known by professionals, like things professional chefs or coders do that amatuers don't.