What some are failing to consider (beyond the blatantly obvious fact the OP was not starting a thread about the holocaust), is how humour is used, or in this case, that humour even exists in the world.
Think Mel Brooks, who was raised in Williamsburg, and served in WWII.
Not necessarily humour, but can be, the act of taking back words like queer, or n!gger, bitch. Reappropriation.
It diminishes the power of the word, or act, or historical time.
It means healing is occuring. It means that every single time a word is used, depending on the context, one doesn't need to be completely undone, offended in the extreme, or start accusing anyone of being a monster.
Jesus. This thread is about stupid gender reveal parties, not the holocaust.
Does everyone have to measure at length every single word and the possible effect it could maybe have on someone who appears to exist for the opportunity to take offense?
The fact that some people want to live their lives in constant outrage over not only real, but preceived slights, is their right.
It's also the right of others to say in this case, "Lighten the f*ck up"
I think some people need to tattoo the word "context" on the back of their hand, so they can refer to it as needed.