I've had a few run-ins with trolls who believe that reality is subjective, and that our skepticality is ruining their magic whenever we show up. Awfully convenient excuse as to why they can't pass the JREF test. Anyway, it seems to me that there are a lot of problems with believing this sort of nonsense. Even before they get to quoting Yoda.
As I pointed out in the linked comment thread: If our expectations affect reality, why do scientists sometimes get wrong predictions? If a bunch of scientists are convinced Drug A will cure Disease B, why do any of them get negative results? If one group of scientists get positive results and encourage replication, why do skeptics performing the replication sometimes get positive results?
I suspect that most of these subjectivists would start reading minds by claiming that someone's subconscious held the opposite view of their conscious mind. Some will even go so far as to state that someone is being dishonest in their stated opinion. Cynicism, ho!
Whatever their excuse, this subjectivist universe would have to be extremely complex and unpredictable compared to an objective one. One would wonder how the universe could get to the way it is, with multiple people interacting. I would think if existing beliefs shape the operation of the universe, we'd all be parallel solipsists or something. I guess it would explain why woos can never hear our real stances on issues, and instead only hear what they want us to believe.
Of course, that's more easily explained by woos being closed-minded bigots most of the time.