The "crazy" people make it less likely that the bizarre scenarios that are real will actually be exposed, because the crazy people that do on rare occasions get one right usually are at the same time ranting about a dozen other things that actually are completely bonkers.

For instance if someone says they were abducted by aliens (from space), but they also say that COVID was designed by Gates and Fauci when they were roommates at Princeton to depopulate the world [1], and that Betty White was using Hollywood to promote the vast secret satanist pedophile network that traffics millions of US children each year, while her sister Barbara Bush did similar in the government, all at the behest of their father the satanist Aleister Crowley [2], and that in early January 2021 the military arrested Biden, Harris, Pelosi, Schumer, Democratic governors, Fauci, Gates, etc and took them to Gitmo where they were tried and executed, and restored Trump to the Presidency but are using robots and actors to make it look like all those dead people are still running things because they don't want to tip off the people running the underground adrenochrome harvesting operations until the children have been rescued [3], I'm not going to take their alien abduction seriously.

If on the other hand Neil deGrasse Tyson said he was abducted by aliens I'd take it seriously. I wouldn't necessarily believe he was actually abducted by aliens, but I'd believe there was a high probability that he had a good reason to believe he was, and that would be something worth investigating.

[1] Yes, there are people who believe that, and yes, they really say it was at Princeton even though neither of them went to Princeton.

[2] That started appearing on fringe sites shortly after Betty White's recent death.

[3] Another real conspiracy theory.