Step 0: remember that people have been creating scam charities for a long time, so the IRS looks for it, knows more than you do about it, and does not like it.
It was just a joke. I'm not from US and have no idea how any of this work :)
To me the whole idea of a gift where the employer donates money to charities in a name of a employee seems like "The Human Fund" sketch from Seinfeld rather than anything that would actually exist in a real world.
