I’m not sure I get the fifty years bit at the very end. Anyone care to explain?
I believe the author worked at Facebook in the past. The "fifty years" bit is likely a reference to that company's recent policy change that explicitly re-authorizes the use of what are rightly considered slurs - even if they were common sentiment to express publicly fifty-some years ago.
Aye, that makes sense (not the slurs, but the explanation). Thanks.