It must depend on the vehicle, but I've managed to pop mine into neutral from drive at 65 mph.
Right. I don’t understand the concept that you can’t put it into neutral while at high speed. I actually have done that on various cars for a variety of reasons (for example, to isolate a strange noise at high speed to see if it was the engine or drive train)
In my current car, a Subaru, I put it into neutral by accident just by accidentally hitting the shift with my hand reaching for something.