Yes, and still true. The issue is that even if not used, the information for each thread has to come down with the HTML page as part of the download to the persons browser. As such, even if not looked at, all of the first few lines of each thread listed on the page also has to come down complete with all the HTML that is needed to support it.
Seeing the size of AVS with the # of visitors and page views, you can see how that could quickly add up in download overhead.
Their you have it.
Take care, keep safe, enjoy the site.