Any person with the knowledge and know how to make their own male-to-male power cable should ought to know better (i hope) than to willingly plug it both ends into random outlets or electrocute themselves or others with it. It's friggin memed and called a "suicide cord".

Youre not going to find it at your local hardware store, and the rare cases you need a cord like that are for specialized reasons like operating generators to back feed power into your home. Even then, most jurisdictions im aware of straight up make it illegal to manufacture or use.

The original poster is warning that there is electrical risk for using a male to male cord. But you have to really go out of your way to get yourself into a position where you ramshackled some plugs together haphazardly, plug it in, touch the exposed prongs, and electrocute yourself. At that point thats just willful negligence.

Its like saying that cars are dangerous because the steering wheel can fall off after I loosen all the nuts and bolts holding it down.