As well as not going there on mobile any more (or hitting back PDQ if I do end up following a link that goes there), I use it a lot less on desktop. If you are not logged in some things (just browsing comments) become a lot less convenient, for instance. So unless there is a link that sounds really compelling (I sometimes get sent links by friends - though usually I just bounce through reddit and on to the actual information which is probably one link away) I simply don't go. I certainly don't go to subreddits unprompted to look for content any more (which I used to).
Yeah, old reddit still exists as some are fond of saying in these discussions. But other perfectly good information sources exist for what I want too (often better than reddit ever was - HN for instance).
Youtube is heading the same way: I'm visiting it less and less. The more adverts they pile in, the less of their adverts I actually witness because I'm not there to see them at all.
I should thank reddit, youtube, and their ilk, really, for saving me the time that I used to waste on their sites and can now enjoy wasting on other things instead!