The conception, I imagine, originated from pure gallows humour that was very possibly hilarious to those involved. We all laugh at sick stuff in the comfort of our own homes.
Putting it online was the biggest mistake they ever made because everything online is taken literally and without context.
The day after 9/11 one of my mates in school walked into class with a shirt on that had the burning towers printed on it. I was in tears of laughter. Not because thousands had died horrifically but because of the absurdity and darkness of it and no one directly effected knew of it so no harm no foul etc
Todays world is totally different though and nothing is treated with common sense, just politically correct, knee jerk, click bait, thought crime, fake outrage bullshit.