Comment by jujube3

The whole job of a Wikipedia author is to take source material and reword and summarize it into an article. They're essentially acting as human LLMs. Wikipedia even has very specific rules against "original research." You are supposed to be acting as a summarizer, not a researcher or author. Wikipedia also does not compensate the original authors of the source material.

Really the only difference between the Wikipedia author and the LLM is that the Wikipedia author will more frequently be asked to provide citations. But the LLM can also provide citations if asked. In neither case are the authors of what is being summarized compensated or asked for permission. In neither case is it theft.