There's a twitter account, JewWhoHasItAll, who does that as satire. I find it mildly amusing. Going to look I saw this one from February which read your mind and it cracks me up:

My gentile neighbor Anthony sent me an email saying he’s not Jewish and doesn’t celebrate Purim, apropos of our totally awesome, inclusive, fun annual neighborhood block party that I’ve been working hard planning.

How should I respond?

— Jew Who Has It All 🇺🇸 (@JewWhoHasItAll) February 16, 2022

Some responses I’ve already ruled out:

• You don’t have to be a stick in the mud.

• You don’t have to make a food or toy donation if you don’t believe in charity.

• Yes, yes, I know, you’re a gentile, you keep talking about it.

— Jew Who Has It All 🇺🇸 (@JewWhoHasItAll) February 16, 2022