It's not the contents of a belief that makes it ridiculous. It's the behavior of the person espousing the belief. I can imagine an entirely rational and quite

It's not the contents of a belief that makes it ridiculous. It's the behavior of the person espousing the belief. I can imagine an entirely rational and quite deep argument regarding whether or not attempts to go to space are just modern equivalents of White Colonialism. And I might not agree with one or all sides of such an argument, but they are not prima facie ridiculous. What makes them ridiculous is a failure to engage with counter-points, a failure to grapple with reasonably established facts that conflict with the stated position, and a failure to engage in falsification (i.e. "well, if X and Y, then clearly my position would be wrong"). Someone who can do those things on behalf of their stated position deserves respect, but someone who cannot deserves much less.