Quite entertaining ...
The truth's in the article bear this point .... a great mind can come up with loads of new and useful ideas, but only a true genius can refine them and muster the resources to bring them to practicality.
Mr. Edison was a master of the latter (mustering, refining and whatnot)
'ol Mark Twain's quote really spells that out.
an aside - the dangers of AC vs DC is like comparing the difference of being roasted by kerosine or whale oil - either way, you are roasted. (I've been shocked by both, worked with both, and they both hurt ... a lot). Edison and Tesla were both right, and they were both wrong.