Guy, the person who bet his life on a part with questionable quality is a moron. People who choose an OS are not betting their life on their OS booting up. Do you not grasp the difference in stakes?
mort96 explained my analogy better than I could. Obviously your OS and your plane are not equally risky choices. Regardless, there exist communities of people who like to heavily customize either of those things.
I don't think anyone is struggling with grasping the difference in stakes. The stakes are different, the size and shape are different, there are a lot of things different.
You don't make analogies out of things that are the same, that's one of the hallmarks of an analogy.