Which one do you hate more?
There's been a lot of talk here and elsewhere over when the 4chan's decline, which has been apparent for at least a decade now, became terminal. Many people are blaming /pol/, or Reddit, or Gookmoot, or Gamergate, but I don't really think any of those are really the case.
I would say that the Fappening was the beginning of the end of 4chan. The writing was on the wall after that point, and it really did open the floodgates to 4chan on a scale that not even 2016 accomplished.
Take a look at the traffic spike around 2014: https://www.rank2traffic.com/4chan.org
The number of users after this point grew exponentially. Not only did the tide of users change the demographics of this website for the worse, but the media attention that was brought here was not good for anyone either. Within six months moot had stepped down and the course was laid in.