I'm not sure whether you are suggesting he should open his code up for others to look at (which I highly doubt he would do) or that he just host a server temporarily to show progress. There does appear to be a forum section on the site where you can request to review code snippets though.
It's something you could ask him on the EQClassic site if you are interested. I could see some obvious downsides with doing a demo on incomplete or inaccurate code though. Namely bad press for anything incomplete and what would it accomplish in the end. Detractors to the project would continue to find reasons to hate.
It doesn't appear that Yeahlight is trying to promote his project to any great extent either because it has taken a long time to get to this stage of development.
As a side note, I did do some research on the term vaporware, an interesting reading here.
http://en.wikipedia.org/wiki/Vaporware
"Vaporware is a term in the computer industry that describes a product, typically computer hardware or software, that is announced to the general public but is never actually released nor officially cancelled. Vaporware is also a term sometimes used to describe events that are announced or predicted, never officially cancelled, but never intended to happen. The term also generally applies to a product that is announced months or years before its release, and for which public development details are lacking."
Now you could obviously point to the second part being months or years but there is a key distinction, there are development details posted regularly.
Ultimately, I find the discussion of just what classic EQ entails more entertaining than playing on inaccurate "close enough" classic servers. It may not be so for you, but that is your choice. Your assertion that this project is vaporware is noted and I doubt you posting it a dozen more times will provide any new information to this project. If you have any specific EQ related topics to discuss I'll do what I can to answer your questions. However, if your only purpose in posting here is to be vaguely negative about the project I don't see the point in responding.
Once again, the purpose of this thread is to provide accurate information on the project and discuss just what classic EQ is.