It may be true that many have seen the Watchtower for what it is, but, let us remember that we were once like those that are still in.
I would not denigrate those that are still in. Some may still be in it for the glory, however, I believe that most of the elderly and most of the rank and file are where we were when we were still in, captives of an illusion.
When we were in when others were getting out back in the 70's, 80's 90's etc. we would have liked it if they denigrated us for still being in.
In time we found our way out, hopefully we can help many more to get out too.