We're all bayesians in some sense. If you show me weak evidence for what I alreaddy believe, I'll just believe it even more strongly. I'll argue for it, but mostly based off my prior belief. If you show me weak evidence for what I don't believe, I'll adjust my disbelief of it just a little downwards. I'll argue against it, but mostly based off my prior belief.

I think you're seeing an important difference between acceptance of a conclusion versus agreement with it. I doubt this study is changing anyone's minds.