I've been around since those days and, while I've seen the occasional post from someone, it's pretty rare. I expect the main reason is that the series ended and most of the analysis/prediction discussion is more or lest finished at this point.
There was a system purge/rebuild or something around 2009 that nuked a lot of old accounts, too, but that was before those you mentioned above. My first account (under the same name) was lost then.
If you really want to go spelunking, check out the old newsgroup rec.arts.written.sf.robert-jordan. You should be able to find the archives on Google Groups. That's where the old WoT FAQ came from.