I noticed that too - does ‘Christmas’ mean ‘to heck with kosher’ in Hebrew?
Odds are that this couple's grandkids won't be Jewish.
I used to be quite Reform, but long before I became more observant I gave up on all pork and shellfish dishes. More to the point, I never disrespected or mocked the true traditions of Judaism. How much you want to bet that these folks are all a bunch of Leftists?