He was poking fun at the framing. It should have been “my sister and her husband”
“My sister and husband” has the same grammatical framing as “my friend and classmate”. It denotes the same person.
I’m Indian too, so think of it as our n-word.
The cs-word if you will.
You stopped a bit short on your delete spree I guess.
But then again, I don’t know your workflow and needs; so I’m glad it works for you.