Oh come on... You shouldn't be using auto steer on ANYTHING but a divided highway without cross intersections, so in other words a freeway. Due to people doing stupid stuff with AP, Tesla\Elon really had no choice but to introduce very fair and logical restrictions to the functionality to keep people from doing something stupid that could potentially be disastrous for the brand from a public perception perspective. It wouldn't have been an issue had there not been threads like "autopilot tried to kill me" and others like it with people using AP in situations where it clearly wasn't made for.
This response from Tesla is very reasonable IMHO and refusing to update so you can continue to use it in an unsafe and unsupported manor is exactly why Tesla should be forcing these updates, and not giving you a choice.
It's just like the people who want to stay on 6.2... I mean seriously people, really??? Especially if you have an AP car...
Jeff