There is also a simpler explanation that does not make Musk looking like an evil wrongdoer - Musk is working on human-shape robots, for this he needs AI.
BTW. Musk started electric cars revolution (which is supposed to help the planet?), he made space flights way cheaper and accessible, his Starlink/Starshield saved Ukraine from being defeated right away by Russia, but, because of his political views, he is considered an evil man.