YMMV = your mileage may vary. It means that what I have experienced my not natch what you have experienced.

It's one thing to complain about modern usages of objectionable language but another to change the language of an earlier age to clean it up for the modern sensibilities. At least we don't have to worry about reading something like:

Oh, how terrible. Was anyone hurt?

No, ma'am. Four African-Americans wuz kilt.