Which religion? See comment# 11, please.
Any religion.
That post takes the issue beyond evolution to prove a point about evolution, which it doesn’t.
We do have politicially-influenced science these days, and Global Warming/Cooling/Climate Change is a prime example. But it is unrelated to evolution. GWCCC is a very recent idea and has been politically pushed by various people with vested interests (economic, political, ideological) since the beginning. Evolution grew from being the underdog and only attained its current status on the top of the scientific food chain after over a century of scientific work on it despite attacks from all sides.
Yes, most scientists laugh at flat-earthers. The bar to a challenge being taken seriously is quite high with such a long-established science.
As for the 1st Amendment, go for it. Nobody is stopping you. But the 1st Amendment does not require that others take you seriously.