"magic" is an overloaded term.

In can mean something so beautifully advanced that you cannot distinguish it from advanced tech and you really don't care how it works, since it works so flawlessly you couldn't bother looking behind the scenes. I.e. a praise.

Or it can mean something that uses some arcane unearthly constructs and at the moment you need to look behind the scenes you find yourself utterly lost. I.e. a critique.