Speaking from lots of experience and an awful historical record, professional scientists are wildly political and biased. Many high-profile research projects start from a desired outcome and then look for ways to justify the pre-existing viewpoint. There is also a lot bias in what is not reported or studied (i.e., uncomfortable topics such as race, sex, and gender, clear findings that answer a question and lead to no more funding, viewpoints that go against an ideology).
When one looks at the efforts funded by Big Science (e.g., grants from NIH, NIMH, the UN, etc.) there’s not much chance of reaching an ‘undesirable’ outcome. Many, many honest scientists have been smeared for going against the club and had the careers ruined or their work ignored. This even affected the development of totally non-political plate tectonics science (aka “continental drift”) a hundred years ago.
Recent academic biases are bent largely toward the left political wing, but 100 years ago the ‘progressives’ of the time were overt racists. The 75 year period following Charles Darwin and the development of evolution led to a lot of eugenics (human breeding/superiority) research, the justification for might-makes-right for empires, ‘Robber Baron’ capitalism, survival of the fittest politics, and ultimately Nazism. It started with grains of truth and ended with millions of deaths and an extreme backlash against whatever facts were originally present. Now, all of these topics are absolutely toxic in academia!
Over the last 10 years or so, there was a widely reported ‘replication crisis’ in the social sciences. Many high-profile, landmark findings could not be replicated by others (e.g., 25% to 50% were actually correct). Contemporary researchers spend their days trying to figure what was right and what went wrong. One only needs to read social psychology or sociology journals to understand there are 50 different ways to interpret any data set. But, Team Science pushed one view mercilessly for a generation or more.
Sociology and cultural studies have had several embarrassing events following the publication of a fake/sarcastic article by Alan Sokol (i.e. claiming that physical reality is just a social construction). This (overtly ideological) subculture has not changed at all – several journals just accepted a bunch of fake satirical reports in the last couple years. And it was the fakers/satirists who got in trouble…
In recent years some very middle-of-the road researchers have been smeared for stating that the global warming hypothesis is overstated and/or the official data samples have been manipulated. They actually believe in global warming themselves, just not the magnitude of human impact. And they get called ‘denialists’ for offering a sincere critique. Professional science is a brutal, brutal culture. [But, the first person to call another a “Nazi” has plainly lost the argument.]
Science is faddish.
Science is deeply political.
Science routinely overturns itself, but is religiously dogmatic until the revolution occurs.
Hobbyists like Amir at ASR and AtomicBob are every bit as neutral and competent as the average research professional.