I don't think society finds stealing cars acceptable. That's why stealing illegal, that's why they're trying to outlaw a device that makes stealing cars easier, and why this article is trying to make it illegal to have easy-to-steal cars.
Outliers stealing cars is not a demonstration that some part of society finds that ethetical.
Society largely finds marijuana use acceptable, and yet it remains a federal crime. When someone cuts me in line at the store, I don't see that as ethical or acceptable, but we don't have laws against it. So your argument that unacceptable == illegal isn't set in stone.
We may have laws for things that we don't bother to enforce as a society. It's easy to see the possibility that society just views car theft as a normal occurrence ("insurance will cover it"), or perhaps too burdensome to enforce, and therefore society just accepts some amount of it without blinking an eye.
> It's easy to see the possibility that society just views car theft as a normal occurrence ("insurance will cover it"), or perhaps too burdensome to enforce
Does society believe it's acceptable behavior though? I haven't seen any evidence to support the theory that we do. After all, if we did, we'd be out there stealing cars.
Outliers stealing cars is not a demonstration that some part of society finds that ethetical.