You are right about science not being like a world-wide church, however. Once can belong to any church, or even none at all, and still be a scientist. On the other hand, your idea of science seems to encompass the concept that only certain members of certain churches are capable of detecting ... something ... and that's science. It's not. Science can understand and use concepts and techniques whether they originated in the United States, India, or Japan (to name just a few of the possibilities). Your idea appears to imply that this isn't really the case or shouldn't be the case. So a vedic scientist could use vedic concepts (which, if attempted by a Baptist, would be useless), and a Dutch Reformed scientist would have at his disposal ideas and concepts that would work only for someone who is Dutch Reformed.
You confuse religion with science.
How convenient of you to formulate your own definition and understanding of science. How inconvenient that so many observers have arrived at the conclusion, based upon solid evidence, that intelligent design was involved not only with the creation of the universe, but is also responsible for sustaining it to this very moment. Since their evidence and observations are not in alignment with your own presuppositions they are suddenly deemed "not scientific, and "not capable of understanding science."
That tune's been whistling in the dark for 150 years. Reckon it will continue.