Consider this:

A pack of wild Redditors.
Moronic, egotistical Redditors nearing your /prog/ home. Trampling your ENTERPRISE QUALITY code. Raping your English language.
And you can't do shit since they're so numerous. The Redditor leader grabs your Lisp program and fucks it with his non-free text editor.
The primal Redditors finally dominate your textboard. They read idiotic webcomics like XKCD and you are forced to put up with their lack of intelligence.
Such is the downfall of /prog/.

i get the feeling much of the people on 4chan and on reddit are the same people, so it prob doesn't matter