You don't become a career scientist or doctor by rocking the boat. A medical degree is a huge investment. Doctors have student loans and families. Anyone who sticks their neck out is at risk of losing their license or research grants.
Bad science, on the other hand, is how you lose your reputation and your research grants.
Sticks their neck out against whom? Against the Afro-Chinese/Euroamerican consortium that took kickbacks from the "medical companies" in order to keep the COVID theatre going? Those poor honest doctors around the world - if only they could speak up! If only one doctor would tell the truth!
Had a non-vaccine treatment for covid been discovered via clinical practice it would have destroyed the EUA for the covid vaccine, i.e. that's how they were able to issue an experimental vaccine widely to the public. An effective covid treatment would have cost the corporations billions of dollars in the present, and the ongoing subscription income of annual covid vaccinations for hundreds of millions of people.
When you've got billions of income it's easy to spread it around to politicians, media, and scientists who are willing to carry the story. You just pay them well and make them sign NDAs: no one will talk. This forms a ready alliance to silence anyone who dares question the corporate narrative.
My favorite part is how the western pharmaceutical companies were able to convince the CCP to suppress non-vaccine treatments. But that's as far as they could go. They weren't able to convince China to allow them to actually sell their vaccines there.
A myriad of psychological experiments, e.g. Milgram, show that people are easily influenced to do unethical things if the incentives are set right and an acceptable rationalization is provided.
This fact is incidentally how I proved that moon landing was faked and that 911 was a hoax designed by the Bush administration. Very encouraging to see great ideas being recycled.
As it turns out, they all failed, plus his own papers proved bogus.