LOL,
It's hard to imagine anyone "overlanding" who lives in fear of simple things. Internet fear is something that has evolved as a sort of pseudo wisdom. If you don't have anything actually "wise" to say, you can always advise caution. Hard to go wrong there! Of course everyone should be cautious, right?. Using a high Lift jack, like everything else in life, is about managing risk. That is all. Crawling under a truck supported by a jack is probably not such a good risk. Abandoning the whole concept because you fear it might somehow chase you down and beat you to death??? Probably not such a good risk assessment either. My personal opinion is that the world has become far too safe. Thankfully, I got to ride bikes without a helmet, stand up in the back seat of the car, explore the back country without a cell phone, and install chains using a bumper jack. I'm better for it. It was a lot more interesting when doing something stupid was your fault, instead of the fault of a company who could not imagine how stupid you could be.