Lawyers are always worried that is their job.
Whenever you sell anything you will carry a degree of legal risk. A lawyer simply advises on potential liability (which can be fully mitigated I would suggest by a range of low cost options) however a good business owner or management leader balances the legal risks against other imperatives rather than seeks to eliminate all possible risk.
I would suspect the real risk of morons misusing a feature and then successfully suing JLR would be quite low.
In the US market (not globally renowned for its sophisticated consumer base) they have been selling non Adaptive cruise control for 40 years, if ever there was an accident and legal liability waiting to happen that was it but no-one stopped offering old fashioned cruise control (sometimes of fairly dubious reliability).