I don't even know where to begin.

JWST didn't just "happen". It was conceptualized, designed, built and launched by the very scientists who wanted to test and improve their theories. No serious scientist thinks that their theories are perfect or that they have all the answers. Quite the opposite, usually. They're constantly challenging each other and themselves with the common goal of approximating reality with their models better and better. Science would never have come as far as it did if it were any different.

Where does this sheer ignorance come from? Clearly you've never worked with scientists in any capacity.