I take it you have never wheeled anything with low gears.I for one have enough fine motor skills to modulate gas and brake with more range than "gun or step on it". I get what you are pointing at here, but the the option for high crawl ratio is not wreckless use of pedals.
I have the (slight) benefit of having the optional 3.73 gear ratio, dunno how "bad" the stock 3.21 is.
It's not about your ability. We arent installing super low gears because we all suck. We are doing it because it works better.