The DNS system is still just computers/servers, so anything from overloading a server to outright man-in-the-middle type attacks can compromise the DNS (though this is where you’d get into how the DNS communicates, propagates, and distributes trust, which is a topic that I have little knowledge on)
I don’t know much at all about the EV industry, especially how their technology differs between manufacturers. But does that really matter, strictly speaking? Like the majority of “other” repairs are going to be just as uniform as traditional vehicles; things like tire changes, brakes, suspension, and whatever else I’m not smart enough to know about.
Other than the actual engine itself, can that other stuff really be fully proprietary, or non-servicable?
EDIT: I’m realizing that I didn’t really clarify the distinction of “should” vs “does”. I recognize that a huge amount of right to repair bullshit comes from companies being intentionally obtuse/greedy. What I meant to question was whether these restrictions on serviceability actually have merit, or if it’s strictly enshittification being brought into the auto world.