Don't you just love the hypocrisy of religion.

[vorlon13]

.....The world has moved on from Paul's backwards thinking...

Try as I might, I can't see anything backward in this, or am I missing something?-
Paul said- "There is neither Jew nor Greek, slave nor free, male nor female, for you are all one in Christ Jesus" (Galatians 3:28 )

It's not so much Paul is backwards, it's that he is committing heresy.

He was never authorized to countermand Jesus.  Jesus would have (and did !) simply uttered His doctrine correctly in the first place, obviating any need for Paul to change anything.