Yeah, I guess there are two sides to the problem here. People that do fraught on a level that is hard to perceive and those that do fraught on a grandiose level. I agree with all of your comments, especially what you say about how the harder to perceive fraught is actually more damaging to science.

But I guess the question initially posed why some people would do these high risk frauds. Why would someone say they've got a working room temp/low pressure supercomputer? Why would someone say they're able to turn anything into gold? As you say, these are just some spectacular outliers though. And some people are just in it for the short time of grandiosity and fame and don't care about the consequences I guess?