Actually, I can't see why?
That statement means that the cars are "dangerous" as they are now...
I don't believe Nissan, Audi, or others will recall their cars to nerf their autosteer...
And even if they do update/downgrade them while they take service at dealerships, there are always a lot of people who don't take the service at the dealership... So why in the world should that be an issue, just because Tesla perform OTA? It's owners choice to install...