When I first joined in 2011, the forums were always flooded with people. I returned to these forums a couple of weeks ago, and I noticed a dramatic change in user count. Some people still make accounts to use the forums, so you can say that its like a 1:2 ratio of users who still use the forums (in general if you count other sites). Discord gives you more capabilities than any other instant chat room site I have ever seen, being the modern version of AOL Instant Messaging.
Well tbf to discord I only use it to chat. I've got three out of the four channels I go to from members of other sites online that started a channel of their own. I don't really use it in the capacity it's meant for because I don't PC game. I have consoles to play games on. I just noticed the similarity to chat rooms of old when I was first invited to a discord channel the first time.