Musk's DOGE let data leak, erased data from a goverment db by misstake, fired important figure working with nuke programs, Ebola and more in front of the whole fucking world.
For now I assume that the whole thing is working out well for Mr. Musk. By now he has probably weakened the specific agencies that were a thorn in his side sufficiently he'll earn back the few hundred million it cost him to buy that position.
Ah, but he didn't hire him, he just made him an advisor. Hiring him would required oversight that would have given others a chance to give a firm "Fuck No".