This is a straw man argument.

I don't like Musk. That's true. The reasoning is irrelevant.

Let's take someone I do like. Linus Torvalds. If Trump (or Harris or ...) appointed Linus, unilaterally, to do what Musk is doing, I'd still have a problem with it.

Now the two responses you might have are:

- I don't believe you.

- Linus wouldn't be bad either.

Both of which completely miss the point. Nobody should have singular, unilateral, unsupervised access to governmental systems like this.