Language is democratic. If people are starting to speak or write in a certain way, that is the correct way to use a language. I know that we have all these organizations trying to define “correct” language use, but if many Germans are deciding that they want to use this apostrophe, that should be correct.
And there is another issue: There are a lot of people looking down on people who can’t read or write correctly. You can see this here: people are calling other people itiots just because they are using an apostrophe in a not officially accepted way. Which should never, never happen
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