Hard disagree. Checking the accelerometer to disable tactile functionality when moving would have been a more intelligent way to go about discouraging this behavior over mandating use of a historically unpopular technology (Siri) in order to use a popular one (Maps, Bluetooth music streaming).
This reeks of the metrics-gaming desperation that we've seen in Google, Amazon, and Microsoft as well.
Shoehorn unpopular technology to gatekeep popular technology. Either way the consumer's quality of life goes down.