This explanation doesn’t resonate with me. Research most often has incremental results that need to be carefully qualified. Isn’t the far bigger problem that mainstream media takes subtle research results and “simplifies” them for the public by adding certainty and often mis-interpreting the results completely?
Political agendas have been recently systematically trying to erode trust in science. (Because science and truth does threaten some politicians.) The idea that science can’t be trusted as the high-level summary is exactly what some people want, and it seems to be working. But what is the alternative? We have nothing better. The point of science is to try to protect against motivation and agenda, and it does work sometimes. Even when people are motivated, when the methods are reproducible and the results are peer-reviewed, that does help filter out some of the badness. And if it’s not enough: what should we do to improve it?
Solar geoengineering is the hobbyhorse I usually use as an example of this. It's an open secret (see e.g. https://www.nature.com/articles/d41586-021-01243-0) that most scientists in the field won't research it, partly due to safety concerns but partly because they think that decarbonization is the right policy and they don't want to risk "detracting from efforts to rein in greenhouse-gas emissions". Maybe that's the right judgment, but it's hardly free from motivation and agenda.
Grant review sessions most definitely have some amount of cronyism, and that famous luminary in a field will almost certainly get funding even if their grant application is worse than that of somebody with fewer citations or younger and with less of a track record. But there's awareness of it at least. And you'll find scientists on Twitter being very open about it, whereas before you'd mostly only find it at the pub during conferences.
There's a great passage from ET Jaynes that I'm having difficulty finding right now. He was a physicist from the 1940s on, and as a young graduate student he talks about how he had to be very careful about what he studied, because if it had the potential to contradict one of the big names of the field, then it could tank his entire career before getting started. If he hadn't "played ball" early on, we'd never have gotten his later Bayesianism.
Science is always a human process, there will be politics to some degree. Politics can only be minimized, not eliminated completely.
Now, imagine that your position truly is objectively factually and morally correct. (I understand things generally don't work this way, but stick with me for sake of example.) All you have to do is find a vocal group of people who disagree with the morally and factually correct position, and you can now call this "political stance" which someone can be "biased towards." (a simple example might be flat-earthers.)
Now of course, this same process can work out in nearly any permutation: the mainstream group could be pursuing an idea which they believe is morally and factually correct, but of course simply be wrong. And then the protesting group, calling out the politicization of the issue, could then be the correct group.
It must also be stated that the closer you get to the hard sciences, the less any of this politicization works. It's worth noting that things such as semi-conductors and computer chips all rely on science, and no one is politicizing whether they exist, or work. What is politicized is a bit more predictable: Questions of the cause of the ills of society, (ie, social sciences) questions about the role of men and women, questions about public policy.
I suppose the point I'm trying to make is that it's quite easy to call one man's truth a "political" ideology. If you poll enough people, nearly anything is "just a point of view" which could be construed as political.
The softer disciplines are particularly susceptible to the style of the day but lust after the cloak of correctness (and status) that hard sciences wear.
Just doing what a good pseudoscientist does: first dismiss any rigorous logical tools...
Science itself has been politicized where the pursuit of truth has become secondary to the pursuit of funding and the alignment with the political agendas du jour. When I was younger my faith and trust in science was quite high. As I have aged and seen more of humanity and how it permeates all aspects of our existence I don't trust science like I did when I was younger. Now all I see are the motivations of those who are doing the "research".
Having studied statistics in college with the express intent of how it is used for scientific studies I am well aware that with enough data you can get any statistical result you want. Even better vaguely word it so it resonates with main stream media and still gives the authors an out with their peers.