I am curious, is there a technical reason anyone would need or want to disable the auto start/stop?
I personally don't like it because of the lag it has, I feel that it can be unsafe. I was initially positive on the subject when I first got it and willing to give it a shot, but on several occasions when merging under difficult circumstances, I have forgotten about the car being "stopped" and I've attempted to merge only then realizing the engine was off and took an extra second or two to get going. Generally not an issue, but merging onto crazy NJ roads can be stressful enough without having to worry about whether or not your car is running. If you're out in the sticks it's not going to be any kind of problem, but if its a tough merge, those seconds absolutely count. Plus you get a heart attack when you realize what's happened...
PS, I am not opposed to having the feature, and in my '19 GC I actually do use it sometimes, but I choose when to turn it on, and ironically, half of the time I turn it on it doesn't activate anyway, as it doesn't always stop depending on what the car is doing at the time. The device we're talking about doesn't break the system in any way, it simply "remembers" the setting of the switch which deactivates it so that it doesn't automatically turn itself on after every start.
As far as technical reasons, they say that there is a more wear and tear on the car as well, which is why they give you an extra battery and supposedly a more robust starter, but since most of the sources I have researched said that the benefits of the stop start system are negligible at best, I personally don't see the usefulness of having it enabled all the time. Since an engine idling uses very little fuel, unless you are sitting at long lights frequently or stuck in a traffic jam, you're not likely to see any tangible fuel savings from the system. The mfgr's include it because number crunching using the system under ideal but unrealistic conditions result in a higher mpg. I assume that the EPA discovered that people disable it and so they mandated that they not remember the off button setting, but that's just a guess.
Now, having it on a hybrid is a completely different story, the electric motor kicks in instantly and gives the engine time to get running, even if you gun it.