Judaism has always been a people of a singular national identity
No. National identity is a relatively modern idea for any group of people. Being Jewish is being part of a culture, not a nation.
The person you're responding to is an ass but you're swinging too far in the opposite direction.
The Muslim countries who send delegations claim there isn't a genocide. The people who historically have used Muslim extremism to destabilize countries and then bomb the shit out of their local population leading to hundreds of thousands or millions of casualties still claim that China's anti-extremism program was genocide.