I took a look at my oldest posts, the forum transitioned to Proboards in very early January 2011. In my recent posts it can show me 40 pages of posts of mine, but that only covers the time until May 2011 for me.
When I go to recent threads and then go to the oldest I find one that I started on January 2nd to show a picture. But the picture is gone. I actually think that one is gone in a database cleanup. But the text is still there.
I do remember that before 2014 some people left due to various disagreements. So either the people actually never posted during that time or they deleted parts of their posts when leaving. I have been on here consistently since January 2011 and before that in the bulletin board type forum which I can still remember.