Yes, "hackers" use Unix-based operating systems. Great hackers also generally insist on using open source software. Not just because it's better, but because it gives them more control. Good hackers insist on control. This is part of what makes them good hackers: when something's broken, they need to fix it.[1]
[1] I copied this from my essay, "Great Hackers" (http://www.paulgraham.com/gh.html).
Thanks to Jessica Livingston, Robert Morris, and Sarah Harlin for reading earlier versions of this comment.
There is a reason why "consultant barbie", "the joke explainer" and "mr i tell you why i upvote" are not here but on reddit.
And the fact that the list has multiple editors isn't saying that you need to use all of them. It means that there are several very good editors and that you should choose one based on your needs / preferences.
I agree that you should choose one, use for all your editing and learn it inside and out. Personally, I just use Visual Studio for everything.