I think that's because all posted pics now have to be housed somewhere besides Head-Fi. There has always been the ability to post pics with their own URL, but in the past, storage was offered on Head-Fi, too. That capability appears to have been removed.
In the short term, I guess that frees up space for Head-Fi. However, I think that's a bad decision for longevity. If an image depends on the person posting it to maintain the resource, they're all going to disappear in a few years. People lose interest, stop paying for their own websites/services, etc., or things just change.