Use uBlock custom filters instead of new extensions for best performance.

Also, it is easy to reload the page in Reader mode, without JS, or block the overlay.

It can do both in one run, as well as making a backup. However, only about half of my Reddit comments got archived in the CSV (also, you can only download it after the script finishes so I always make sure I can leave it running for several hours, which it needs because of rate limits and hope it doesn’t crash – it never did, though).