"No one in their right mind" - Again, maybe it's because I see a version of my younger self, but it seems oversensitive! Yes, I know we are now in a world where any joke in the workplace that bases itself on "protected class" is theoretically off-limits. But that switch has flipped rapidly, and on top of it, that joke was truly minor. If it was an aggression, it really puts the micro in microaggression. But to read the comments, you'd think he made a Holocaust joke on Passover.
It was foolish to make the joke, it was even more foolish to make it on a digital format that cannot be rescinded. It's also foolish for people to immediately call for this person's removal from the community in perpetuity, rather than have a chat and explain that those jokes aren't funny.