Yeah, and sometimes the researchers are actively hostile to laypeople questioning their priestly caste.
For example, there's a fairly nasty and debilitating condition called CFS which respected British psychiatrists long ago decided was psychosomatic. So a few years ago, they ran a high-profile clinical trial called PACE which tried to prove this by testing their preferred psychiatric treatments, and naturally it concluded they were right. It was also fairly shoddy, which shouldn't surprise anyone on HN. In particular, the results in the final paper used a different and much weaker criteria for success than they'd intended to use at the start, which is a no-no. (There were a bunch of other issues with it too.)
A few trial patients and some outside scientists noticed this tried to get enough data to see what the results were if the researchers had done the scientifically valid thing and used their planned methodology, and that's when things got nasty. The researchers loudly cried to anyone who'd listen - and plenty did, because they were respected psychiatrists and the patients were officially nuts - that this was dangerous, vexatious harassment of scientists by activists, using their position to frame their pre-existing beliefs as science and questioning them as unscientific. All the proud, clever supporters of science bought into this and kept on doing so.
This was almost a decade ago now. The reason it springs to mind is that a few days ago, Reuters ran a long-form piece uncritically repeating the position that opposition to them is a dangerous attempt to silence scientists through harassment and abuse, and it made HN: https://news.ycombinator.com/item?id=19377986 Discussion ensued as to whether suing the evil people discrediting their research into oblivion was enough or whether they needed to be jailed, and why universities hadn't fired staff who disagreed with their results yet.
Oh, and the punchline to all this: the researchers were almost all male, the condition in question primarily affects women. It turns out that science, at least as experienced by poor disabled women, might be more accurately described by all those pesky postmodernist complaints from the women's studies department than it is by the scientific method.