Even after the establishment demonized something as pseudoscience, there could be a path to legitimacy of a certain sort, and even orthodoxy.
Secular evolutionary biologists find themselves repeatedly accused of cloaking what are ultimately religious (or at any rate, metaphysical) commitments in the guise of pure science.
For many physicists and philosophers, one of the most attractive features of “multiverse” cosmologies is that they render “God” unnecessary.
Orthodoxies help to create consensus and form communities of authority. But they also determine what questions we can legitimately ask.