I think it’s because some people wants to impose their values on others, especially if it gives them an advantage in society. Moral values are fluid and can be manipulated, facts are not. Religion used to shroud values into fictions and present them as the truth. But, because science are demystifying most of them, leaving only the moral parts, people are starting to see that moral values are relatives, not absolutes, and it involves only oneself. So now, they want to dress science as one of the other religions, something that is wrong.