When a trans person comes out, their dead name is the name they've abandoned in favor of their chosen name. Deadnaming someone is calling them by their old name. When done intentionally, it's considered incredibly rude.
Musk has a trans child whom he refuses to refer to by their chosen name, and he complains that people refuse to call his company by its new name.
At the risk of getting sued, this is how Elon runs his businesses.
Shows up late to nearly every meeting, and then will ridicule his management team for wasting his time.
He'll blow millions of dollars on an incredibly stupid idea that doesn't work and every expert in the room advised him against and then he'll turn around and fire managers for not saving pennies on a part.
He constantly lies to investors, customers and government agencies by promising things he knows he cannot deliver and then will fire managers for not setting achievable goals.
Fuck this piece of shit. He deserves everything that's coming to him.
Deadnaming is when you intentionally call a trans person by their birth name rather than the name they chose when they transitioned. Musk has a trans daughter who has disowned him. You can imagine what kind of a a father he must have been for her to have disowned the world's richest man.
Calling a trans person who has chosen a new name in accordance with their actual gender (instead of the one they were assigned at birth) by their birth name is called deadnaming and if done deliberately is really hurtful and disrespectful.