Far too many of those who pass themselves off as scientists are not looking for truth. They are looking for data which verify their hypothesis, often to the exclusion of data which refutes it.
Rather than find out what is, they seek to prove their theory.
I have seen this in geological interpretations of rock layers which work great if you just follow the road guide leading to selected outcrops, but the interpretation fall far short or completely apart if you examine outcrops of the rocks (from the same formation) not on the itinerary.
The introduction of profit motive via grant money tied to political agendae has corrupted the scientific process, the politics of obtaining funding overshadow the science involved. There are those who will readily sell their scientific souls for such funding, and then are forced to double down as their reputations are called into question.
Once science became political the corruption followed.