That doesn't mean you can't use Wikipedia's content in other ways, nor does it make it immoral to do so. I found this page which gives an overview of what's ok

That doesn't mean you can't use Wikipedia's content in other ways, nor does it make it immoral to do so. I found this page which gives an overview of what's ok to do with their content. Mirroring is literally the first example they give. https://en.wikipedia.org/wiki/Wikipedia:Database_download https://en.wikipedia.org/wiki/Wikipedia:Database_download