Because you can do something (manipulation) doesn't mean everybody else did do that thing, consistently, across hundreds of years, thousands of miles, and millions of people. But sure, it's a conspiracy.

I have done the science myself, you have not, or you wouldn't be speaking so foolishly. One doesn't try to replicate results in science, one tries to disprove results. Your ability to type your anger out at others (whom you do not know) across the world was created in that process. You simply don't know that you do not know. You get it wrong, complain that your wrong idea is a bad idea, and never actually address the science.