One look at previous posts in the root makes me wonder why you think that.

No sure why anyone could have anything other than a positive opinion of Sagan.
Unless maybe Ken Ham or Joel Olstean is in the subreddit.

No, A Luddite is someone that is opposed to new technology or does not understand how to use new technology.

I would argue that everyone has bit of Luddite in them, if not they will as they age.