I say they just say that cause they wanna be related to him when they know they're not. I wanna be related to him myself but would I say I am? Of course not.
Nobody would have had to post this প্রশ্ন if the 'relatives' didn't feel the need to say 'my cuz' on some many of the questions. It just became so obviously false after পাঠ করা it way way too many times.