I have to admit that I have always been fascinated by conspiracy theories and the more of these I run into the better I understand what I find so fascinating about them.
We don't have too many other situations where we can witness fiction being written collectively and unconsciously. Most of our mythologies were written long long time ago, many of them even before writing was invented. Any more "modern" mythos we find in literature are usually constructed by specific writers (typically by sci-fi and fantasy writers) and some of them collectively to some extent (the king in yellow related stuff that I can't quite wrap my mind around) but even then, the contributers are not that anonymous.
Recently QAnon was a good example of that, though that was a bit of a cheat since Q was posting questions that prompted and guided the mythology, there were parts of that constellation of beliefs that erupted spontaneously and gained a life of their own (from what I understand) like the Pizzagate mythos, the part about drinking baby blood (which apparently is mostly the recycled and repurposed version of blood libel conspiracy -- something I was not quite exposed to growing up, so I am not sure). I can't remember if the 9/11 trutherism came out of nowhere with that "Loose Change" movie or if those ideas were already floating around and the movie simply compiled them.
So when I look at these baffling ideas that are being pout out wrt the Baltimore bridge collapse, I can't help marveling at the creativity of the human collective to create fiction out of the most mundane events. Yeah, it is being weaponized to dangerous ends and all that, but at another level it is proof that after all the technological and social advancement we've been through, we are still a species that instinctively understands the world through stories we create about them. That's just our biological wiring. When something unexpected happens, we don't even skip a beat, we immediately construct some story around it ... whether we have any evidence that suggests it or not.
So yeah ... a black swan event, worldwide Chinese hacking, illegal immigrants, DEI ... throw them in a stew and keep stirring until a good piece of collective, anonymous fiction congeals. That may be our true contribution to the universe.