I have mixed feelings on this. On one hand the boardwalk railings certainly imply you should stay on the walkway, even if the officially regulations do not state as much. I'm always bothered by those thinking rules are for others. On the other hand, the feature that makes this site worth visiting is a collection of disturbance oriented species. Limited disturbance (with extreme emphasis on limited) can encourage the interesting and rare species, rather than discourage them. We normally associate the kind of disturbance with fire, logging, etc, but trampling followed by a period where the vegetation is allowed to recover, can create idea conditions as well. Unmanaged disturbance, however, is certainly going to be hit or miss in it's value.
The boardwalk itself may even be a problem. I've been visiting the site for over thirty years now and have noted a gradual succession of woody species, which could eventually threaten the more "valued" plants. Some time ago our own Lost Town Hunter told me he believed the walkway railings, which didn't exist on the original boardwalk, might be discouraging deer browse on the woody species, allowing them to gradually claim the site. It would be nice it the site received some genuine management, but I'm not too optimistic about that, giving the current economy within the state. There are certainly more productive bogs in remote areas for botonizing, but this site's accessibility makes it an idea teaching tool.