Is it though...? As stupid as the Abrahamic God is, at least you have a "God of the Gaps" thing going on where all God really has to be is someone with their own agency to grant you what you ask for and to determine where to place you in an untestable "afterlife". Of course there's an obvious cocktail of inherent contradictions when you choose "omniscient", "omnipotent", and "omnibenevolent" at the same time, but then you can appeal to the idea we wouldn't possibly understand the whims of such a god outside of time and space. Again, stupid as fuck, but you can weasel your way out of anything.

But witchcraft? Okay, you're transferring the agency to yourself, a human that exists here, and you're saying you can perform magic, but now you have no evidence you're capable of jack shit and you have no excuse to pawn it off onto. You'll never be able to do magic your entire life because it categorically isn't real, so is the excuse that witches are real but you personally really suck as one? Is the idea that you do what "God" does and take credit for anything that vaguely "works" by sheer coincidence and ignore everything else? Do you only cast "spells" that function as placebos like easing someone's pain or making them feel happy – similar to many prayers?

And of course with God you don't have any way to test where this magic is coming from; it was there before time and is all-powerful, and there's any number of ways with that setup to weasel your way out. But what's the scientifically measurable phenomenon behind witchcraft? There is none, and unlike God where there also is none, this should be easily testable if it exists since it allegedly interacts with the physical world on your command.

So now you've gone from untestable woo like the afterlife and testable but weaselable woo like prayers to woo that you should absolutely be able to test empirically because you're in control of it.

You say that as if you HAVE to believe in magic.