He just explained that he’s using open source tools to take other people’s hard work and re-host it, using an account he set up seemingly just to promote this service. Looking at the website itself I don’t think it’s particularly offensive but I could see why people might not like it.
It doesn’t look like anything is being rehosted. The links go straight to the original blogs.
An AI summary of the article by definition contains information from the article; otherwise it would not be a summary. Whether or not you consider this rehosting is muddy but some people might, which is all my comment was saying.