You’re right. While in a Wrangler forum, someone shared this interesting article of exactly why FCA has installed these security devices...

The Jeep Hackers Are Back to Prove Car Hacking Can Get Much Worse
After sparking a 1.4 million vehicle Chrysler recall, the security researchers offer a new lesson: It could have been---and could still be---much worse.
I thought this kind of stuff happened in movies!