This brings to mind the 2nd Amendment being put in the Bill of Rights. Had those 39 men who signed the constitution in 1787 had seen an AR15 which in less than a minute could have killed every one of them, it would have been included.
For being such an enemy of Political Correctness Bill Maher is saying that in 25 years we will have accepted what we call Political Correctness as just the way things should be. After all, PC is at it’s core only a call against bigotry, racism and sexism. And in 25 years there will be more minorities than white people and far more women in politics.
BTW, Political Correctness has been the most effective political tool of the Republican Party in American history.