There are always people leaving that need to talk over the issues involved - the site will continue to be here for that.
There are plenty of non-Jw related discussions and areas like you mentioned in your opening post which is good and healthy but overall the forum will not be evolving into a non-JW forum, people read and comment on what interests them! Some people reach a stage where they move on to other interests and stop posting and become an ex-exjw which is great, we are just happy to have been here when they needed the site - others stay for various reasons as they may be still impacted in some ways even though they have been out for a long time, or they might just like it here ! continuing to post on this site does not really stop you "re-integrating into society"