do you enjoying having to accept the popup disclaimer literally every single time you start the car? i sure do, love it, what a UX
If they think they need to show you this (for whatever reason, their legal department said so), then it has nothing to do with bad UX design but really, being in between a rock and a hard place. If my legal team made me do this, I'd also show it every single time, because you have zero guarantee that the person driving the car this time is the same person that saw and accepted the dialog the last time. Even if you think about "driver profiles", that totally goes out the window in a rental car scenario for sure and even in a non-rental one, not everyone that has a car that has "driver profiles" will make use of the feature.
So as a dev I would show this for whatever period of time legal required me to show it, to CYA for the above cases and then I'd just close it because I don't want to annoy people so much as to actually require an actual "click" on the accept button.
Im guessing its the opposite - the devs involved in this were probably outsourced (famously legacy car manufacturers do this, its all cobbled together external chunks), and didnt give a shit at all. Closed the jira task for compliance and moved on without a second thought. This is why Subaru and other legacy car companies make such atrocious UX.