While I can’t speak for the global warming bunch, I will speak for the medical ‘experts’ who have been DEAD WRONG when it comes to what people should be eating. Specifically, they told us to NOT eat red meat - totally wrong, and they told us to load up on carbs - totally wrong, and it’s why we have the obesity / diabetes epidemic.
So why don’t they come clean? A (very) few have, and they admit that they were killing their own patients (Tim Noakes, being the most prominent).
But the vast majority of people in the medical and nutritional fields STILL give lethal advice to their patients (such as saying it’s ok to eat carbs if they have diabetes, as long as they’re ‘healthy carbs’. Good morning, there are no ‘healthy carbs’ for diabetics, they’re all lethal)
Anyway, there are many reasons they resist telling the truth - here are a few:
1) The GOVERNMENT still says that red meat is bad and that some carbs are good.
2) Given that, insurers and medical groups will follow the government, as that pretty much prevents people from suing them.
3) With insurers and medical groups following the government, doctors who want to continue to practice have little choice, so they follow the government. Resistance is very risky in that area.
As to the government motivations to continue this lie to the public:
1) Influence of Leftist groups, including animal rights types and vegetarians.
2) Influence of AOC types, who think the world will end due to methane suffocation, if another cow farts.
3) The Deep State NEVER admitting it was wrong, on anything.
Other Factors:
1) How does a doctor explain to his patients that his advice over the years, or decades, is killing those patients?
2) How does a doctor live with that thought? By simply ignoring it...the recent science and the studies must be wrong, and the untested/unproven theories of the past must still be ‘right’.
As to ‘climate change’ - probably a lot of the same. The professors got duped by the left, and rather than ADMIT they were duped, they continue to push the lie. Much easier than looking like idiots.
Doctors can live with any thought as long as they’re paid for it. Same with lawyers.
Politicians are even worse; they’d screw a snake if you held it down.
Used car salesmen are Saints compared to the above three professions.