Can a client make a request to fetch all the things from a specific comment thread? Example: I go to a mailing list for pick-your-favorite-old-grumpy free soft

Can a client make a request to fetch all the things from a specific comment thread? Example: I go to a mailing list for pick-your-favorite-old-grumpy free software project. I click through the ancient, craggy mailman web interface. Hey, there's a button that says, "download the full archive (x MB)." Now I have all the things. Real World Use Case: The Guardian once deleted some comments on a Greenwald op-ed because of insert-old-craggy-British-law-here. Archive access would have empowered users to periodically archive the comments so that they have control over content they want to read, while the publisher is still able to remove comments from flow and archive when forced to censor.