Perhaps meaningless to you. Canon can be immensely useful for cooperative fictional efforts, which is the point of having a community canon in the first place. People build a mental model of the world that a fictional franchise represents. Discontinuities between stories that are suppose to be set in the same universe are confusing and jarring to fans, and for those who want to create stories that preserve continuity, it can be a challenge to determine which part of what story to make continuous with your own story.Yes, if the IP fell into the public domain, canon might become meaningless.
This is an interesting pick, seeing as the Sherlock Holmes stories are going to fall entirely into public domain in 2023.Or not. Look at Sherlock Holmes. The original stories are canon. The rest? Your choice.
In theory, some could start a book series called "Sherlock Holmes: Alien Hunter". Would this series have its own canon? Could there not possibly be an indeterminate number of derivative Sherlock Holmes canons? (Not that there has to be One True Canon, so long as each canon has value for its respective community.)
The term "Legitimacy" is meaningless. The community is free to determine what's in their own canon, and another community is free to create their own separate canon and make their own choices. I'm basically advocating for open source continuity.But the idea of a panel determining legitimacy is snobbery.
Any community effort is going to require administration of rules. These very forums have rules. Are the moderators "snobs" for enforcing those rules? There seems to be an attitude among some in this thread that they are above canon, and that those that value canon are to be pitied. You're impugning the motives of panel members that don't even exist yet, solely because they might choose to participate in the creation of a canon you look down upon. That doesn't sound like humility to me. It sounds like something else.