Jim, there is a difference between "claiming" "supporting" and just believing.

I generally believe the weather forecast every day, but I make no claims about it nor do I support the met office.

Why do I believe these people?
Those five people all separately attributed the behaviour to aspects of the culture.
So prominent are they that their opinions were universally reported by all the media, including all the quality broadsheets and national broadcasters.
No detractors have been similarly reported and no other theory has been reported at all.

I believe them, but I make no claims about their ideas and am not supporting them.
If someone comes up with a more convincing theory I will believe that.

OK?