By way of extreme example, if every time anyone engaged autopilot, it issued a warning every minute, you would quickly ignore them. Information fatigue.
Looks like this concern has been addressed already.
Being dead does not automatically command more respect. If someone's fuck-up caused them to die, there's nothing wrong with criticizing them for their fuck-up.
You said "whether this is fair criticism or talking shit about a dead person", which can easily be interpreted as saying you think people that are dead deserve an extra level of respect simply for being dead.
Obviously your message has been misinterpreted by multiple people.
Which is super annoying when driving on narrow two-lane roads, since you're usually almost on top of the line when you're driving perfectly straight down the center of the road.
edit: I hear the cars engage hazard lights and slow down and stop if one's hands are not on the wheel. I guess that's fine.