It's not the character, its the way / context in which it's used

https://en.wikipedia.org/wiki/Metal_umlaut

I know what he was referring to. But the use case is obviously languages other than English, not the Motörhead fan club newsletter.

Some combination of people misunderstood some other people's joke, not totally clear which and which.

Yeah, that dude oughta read books and learn about computers, too.

And live in a country where they use these in their alphabets.