Yep, not just evil, incompetent.

Only an idiot would implement functionality that would allow remote deactivation of a critical safety feature. You get hacked, you have a rogue employee, or one of your programmers makes a mistake, and you're fucked.

When you get called onto the stand to testify why this life-endangering feature exists in the first place, you'd better have a better answer than "To make sure I get paid." At best, you're sued into oblivion. At worst, you go to prison.