I don't know how everyone views the Wiki, but the way I see it is, it's really a great thing for allowing gamers / writers / and others with an interest in Traveller to add to what is a massively huge universe.
So long as the game rules are followed, canon, and previous information entered is considered, the only thing that can come from those who take an interest in the game, a real interest, is a richness of ideas and color that makes the Traveller universe come alive.
To give an example from recent history, it was the genius of IBM in creating an open source small computer that led to the PC revolution. The previous closely guarded source code, proprietary system only limited innovation, and creativity.
It's not like the core rules or canon are threatened. They aren't. If anything, more stuff in Wiki only generates interest in those rules and canon.