Imagine if you're handy yourself, and you decide to either strap it down or make a latch of some sort, and it's fixed in place. Or even just replace the latch, but it's the sensor that's faulty. But you can't drive it anymore. Instead you have to take it to the dealership and pay out the wazoo to get it fixed.
Yes safety standards are important. People are dumb and would ignore a warning. However, you should be able to disable the speed limiter.
Edit: also you're acting like you're refusing my point, but that's not what I'm saying. You can feel upset about overbearing safety systems and still appreciate safety. It's like saying "man, that's a real mean dog" and someone coming back at me saying "Excuse me, dogs are great animals. Do you think the blind shouldnt be able to have eye seeing dogs??"