em-dashes and en-dashes are used for completely different purposes, so why would they be confused?
The use seems to be more common in British than in American English.
Not saying this is accurate usage, maybe just real world usage.
I didn't even know there are multiple types of dashes.
I did know about multiple types of quotes because they kept breaking code on blogs. Still didn't care, but at least I learned how to spot and fix them.
Really looking forward to having the wrong kind of dash in code, but at least with current tech that seems like it won't happen.