A better counterargument to his argument would be: hashes are not "my plane", potential adversaries are not "a meteorite". Using analogies is okay when you try

A better counterargument to his argument would be: hashes are not "my plane", potential adversaries are not "a meteorite". Using analogies is okay when you try to explain a difficult idea to somebody who wants to learn about your subject. Using analogies is not okay when you want to make a solid argument, when you want to convince somebody whose stance is very different from yours.