As I understand it, "fair use" would allow you to do various kinds of analysis of all those pages, and to quote fragments of them in your own work, which is arguably similar to what copilot etc might do.
But republishing large chunks of the content, whether verbatim or in a "derivative" form such as a translation, would generally not be allowed without explicit permission.
How much "fair use" allows when it comes to copilot spitting out copies of functions it saw in somebody's repo.... well, that's a line that hasn't been defined yet, afaik.
