This is not a well supported position. There are numerous well established scientists who have expressed concern and criticism on the current 'consensus' in regards to climate change. These include for instances Richard Lindzen [1], a member of the National Academies of Science, an MIT atmospheric physicist, and also a lead author on one of the scientific sections of IPCC climate report. Appeals to authority are foolish, but I think his credentialing is relevant to this discussion.
Beyond that, one major issue is that the extreme politicization of this issues makes it difficult for people to speak freely. Anybody who speaks their mind on this topic, when such view doesn't abide the 'proper' view is labeled, attacked, and ostracized when and if possible. So you end up primarily with radicals, fools, and a handful of people with extremely thick skin willing to speak. A similar treatment was given to those who, for instance, suggested that leaded fuel might indeed be harmful - the official government and 'consensus' position for decades was that it was safe or posed negligible risk.
I am not, in this posting, thus taking any side. But I do think if you ever want to achieve progress on any topic, people being able to speak freely is critical to progress. Only weak or poorly supported ideas need fear 'contrarian' views. And even in the rare case where those weak or poorly supported ideas happen to be the truth, they invariably become stronger over time (due to the accumulation of validated falsifiable evidence) while, vice versa, alternative views become weaker.
But perhaps more importantly, I think the desire to squash contrarian views has a paradoxical effect. The idea is of course to try to prevent the spread of these ideas, yet in reality there never works - even less so now that we've entered the era of the internet. See: China + Winnie the Pooh for an amusing example. But far more critically, I think efforts to avoid discussion are often seen as an inability to compellingly respond. Once ideas reach a critical mass, they will spread unless compellingly challenged. Refusing to challenge these ideas in a fair and impartial way only strengthens them.
[1] - https://en.wikipedia.org/wiki/Richard_Lindzen
