In the age of cheap electronics, all vehicle manufacturers are in love with the idea of adding gimmicks, not because they are truly needed, but because they can. For instance, once they went to the cheaper keyless lock and ignition systems, they found they could add cheap sensors to let people wave their foot under the rear bumper to open a liftgate or deck lid. I guess it might come in handy if you work for the mob and are struggling to carry a dead body wrapped up in a rug and need to dump it in the trunk, but for most situations it is overkill.
As for the hill holding stuff, or vehicle hold control, you have to remember we now have more than one generation of drivers that never learned to use a clutch and manual transmission, or even how to use a parking brake or left foot on the brake when driving an automatic trans vehicle. These are the same generations that tend to drive distracted more than most, which has led to all the driver assist tech like automatic braking, lane keeping,etc. And now there is even a push for auto makers to be forced to add a system to remind parents to check for kids before locking and walking away from their cars. A parent with short term memory issues and lots of distractions could just tape a reminder on the inside of the windshield and driver door glass, but these days we always insist a third party be responsible for doing what we are too dumb or lazy to do ourselves. This will be one more thing where negligent people will be able to shift blame to someone else AND sue for damages. The nanny state is only going to get more intrusive, so get used to it.
JMHO - Jerry