Watch that victory speech one more time. Isn't it (by your definition) inappropriate flippancy to use an address to the entire population of the world, upon being elected to the highest office in the most powerful nation, to tell your kids they can have a dog?
There's a saying in the army (a deadly serious profession if ever there was one) that if you can't take a joke you shouldn't have joined. Black humour indeed since the saying is thought to originate from the period of conscription. But they're quite serious. Refusing to see the funny side doesn't give you credibility, it makes you look inhuman.
This announcement conveys its message (what was released, and what you should do about it) and it has a little fun. I'm sure any number of software release RSS feeds relayed it in a form suitable for machines, lacking any humour or humanity and you are welcome to subscribe.