The DID anchors all signed packages by the key defined inside of it. But the DID doesn't create "Trust". Spammers can have DIDs that anchor all of their messages that you can verify. But the "Trust" only comes when you verify the did (or a VC, like you said) from an entity that you already Trust. 

A Trust "Anchor" is then the master entity whose all trust derives from. Sure, you can have many Trust Anchors, but the Orange Check is specifically marked as Microstrategy's anchor keys. 

There is no way to have only one Orange Check for multiple Trust Anchors, since their trust-verifying methods can be completely different from one another. And if they are all the same, then it is almost as if there are all derived from an invisible Trust Anchor. A Trust Cartel if you want.