Musk doesn't give a shit about any of that waste. People aren't pro government waste, they're anti political grandstanding about meaningless crumbs as a distraction while a literal nazi-saluting fascist eats the rest of the pie.
It's not an either/or situation. You can have responsible spending and also services to benefit everyone. Cutting me a check to give me back some of the money I've paid into the system doesn't make a whole lot of sense if you only got the money by destroying the CDC or whatever.
It would be kind of like the gas company tearing my house down because my windows aren't insulated and then giving me a couple hundred bucks because they technically eliminated the source of the wasted energy