Shared albums are private communication channels and even a shared album on a public webpage should only be shared with people you invite personally by name. Any person you invite personally to view your album should know your full name anyway. The shared albums are not supposed to be used as public web galleries, where you post the link to the shared album on the web. If you invite people to contribute photos to the shared album, they need to be sure, that only the people they are seeing on the invitation list will receive the link and be able to see this particular shared album and no one else. even a shared album as a public website is not public at all. Only people with the link can access it. Invite only people to the shared album, who you can trust to keep the URL to the shared album private.
If you want to publish a shared album as a public website and to share the link in a forum, where you do not know, who will be able to access this link, do not invite anyone as a subscriber to the album, with the invitation to post photos there. They may not like it at all, if people they do not know will get access to their photos.