If you think scientists are a small homogeneous group you're delusional. Yes, there are money involved, yes there are scientists for sale but that's minority. Saying science is corrupted as a whole is like saying all professional athletes are disabled and use wheelchairs after seeing basketball game on the para-olimpics.

Why should I believe people who are paid by big oil about climate change (as all deniers)?

You don't get to accuse Big Pharma and Big Tobacco of funding fraudulent studies, and then defend the scientific consensus on issues you personally favor. The mechanisms at play are identical in both scenarios.

What? Do you think the world is just black and white?

Same players in academia. Same editors of the journals. Same level of peer scrutiny applied. Same everything.

I work in one of the big 3 of academic publishing. If a research gets published other people, not only scientists can verify and negate the results (and if it's a important research proving it's wrong give equal amount of fame and scientific resarch). That's how science works. Scientific method is one of the best tools we humans ever created.

If one doesn't see a difference between various types of studies then is prone to manipulation. There is a difference between sponsored "studies" on 14 subjects running for two weeks (typical study used to back claims about "new and improved face cream") and massive cohort studies based on 1000's of subjects and running for decades.

If science is for sale, consensus is worthless.

Humans are for sale, humans are worthless.