I used to get the BSD magazine, and I got a puzzled look or two from the neighbors. I just said "oh that, it's a computer thing". No big deal.
But how would you feel if you ran into your neighbor at the mailboxes and they were getting magazines with swastikas on them? How about if you went to use the hotel network and the sign-in page said "Powered By" and a picture of a guy in a white hood standing under a burning cross? You might feel a little weird about it too.
There is a language of symbolism and iconography that exists in Western cultures. This image of a demon/devil/satan has a relatively coherent meaning. It developed this meaning long, long before some guys in a computer lab chose to use it to represent something completely unrelated, as some kind of visual pun. It's as if they were intentionally trying to be confusing.
So cut it out with all the snickering about "look at all the dumb superstitious people who can't wrap their heads around a daemon process".
This is the kind of antisocial behavior that gives nerds an image problem.