Nobody serious believes that warrants his replacement. It will be interesting to eventually find out what's actually going on. If I had to speculate, a combination of his refusal to drink the koolaid wrt any combination of AI doomerism, singularitarian AI cultists, china-hawk warmongering, etc. He was trying his best to sell AI and AI accesories as what it is, a normal technology that doesn't have feelings and will neither exterminate us nor bring about heaven on earth, and apparently basically nobody else involved at this level is ok with that.