Pun threads, memes, and complaining about post quality have been a part of reddit since I started frequenting over 5 years ago. Honestly, with the popularity of so many niche forums the general quality of the website has probably gone up. The problem many people face is after frequenting for awhile you begin to see trends: before opening a post you can predict what kinds of responses are going to be upvoted to the top. It feels like the website has gotten worse, but the only thing that's changed is your enjoyment of it.