My searches on Reddit for entirely unrelated keywords have been increasingly polluted by distracting hateful crap that I do not want to see. Subreddits aren't independent/isolated enough that they can do whatever they want without it having an impact on the site as a whole. Reddit's looking for more growth. I'm sure that many potential users have been turned away from the site by similar experiences. If they manage to clean up the site without killing it, it could really help.