Ask HN: Any point to keeping my grandfathered AT&T unlimited data plan?

I've held on to a US AT&T unlimited data plan for years. It dates back to the dawn of unlimited data, when the company was failing to disclose its practice of throttling. I've kept the plan on the basis that one day, AT&T might be compelled to provide the account with unlimited, unthrottled data, as was represented when the account was established. Now it's 2023, and I haven't followed the case as closely as I should have over the years. Is it time to give up and switch to a modern plan, or is there ongoing litigation?