People have different values and ideas, which means those words may mean something entirely different to someone else, to how you interpret them. xGPL code seeks to protect the freedom of the developer and the consumer to tinker with the code (right to know and repair), at the (slight) expense of capitalism. There is no prohibition on you to use the code, even commercially. All the license demands of you is that if a consumer of the product demands the source code, you share it with them. And that you cannot prohibit them to modify and distribute it further.