Enfeeblement Science?

I am not sure whether science should ever 'pull its punches' to keep deniers onboard. This seems especially problematical when the topic is climate change and the deniers are people with vested political or commercial interests (https://www.theguardian.com/science/2018/sep/23/scientists-changing-global-warming-report-please-polluters). Science stands or falls by making a testable hypothesis and making predictions on this basis that are experimentally examined (hopefully, in a way that is unbiased). When the predictions are not supported, the scientist has to change the hypothesis (either by tweaking it or coming up with something new).There are no such constraints on 'belief systems'. So you can't be a little bit scientific and the fact that scientists often differ in their views should not be seen as a weakness (especially when a contentious area is developing). I do think you have to tell it how it is!