Oh, good night! This isn't about 'politically correct', it's about basic manners in good company, and basic human dignity.
I don't know about you, but if my mamma saw me acting up like that, she'd have tanned my hide - and then told my dad she saw it, and then he'd tan my hide, just on general principles... My Dad's gone now, but my mamma is well into her 70's and if I acted like that even now, she'd be hauling me to heel. Decent folk don't act like that.
Don't be confusing the basic manners and etiquette of polite society with 'political correctness'. If you was raised right, you know the difference - and to try to defend the man on this point is simply unconscionable.
It’s political correctness, plain and simple. Putting handicapped people in a “protected class”. Shameful. Give them the dignity of being treated as everybody else.