JS-rendered websites are sometimes even better, they usually have some sort of internal API that you can access directly instead of relying on the website styling which may change at any moment.
I'm a fellow reporter who needs to keep tabs on some websites. I used various tools, including running my own Klaxon[1] instance, but these days I find it easier to just quickly vibe-code a crawler and use GitHub Actions to run it periodically. You can make it output an RSS feed, email you, archive it with archive.today, take a screenshot, or trigger whatever action you want.