I think you're too quick to dismiss. All that your examples prove is that your personal preferences are different to business style code. The fact that you prefer snake case, shorter variable names and throwaway code is quite telling; I enjoy programming puzzles like Advent of Code, and I always use long names in camel case and try to never repeat code. I find that it reduces the mental load and allows me to confidently code faster.
Also it's not pseudo-science. There are real, live techniques for identifying programmers based on binaries:
Identifying programmers based on their style is different than assuming people with a certain style exhibit certain personality traits. Programmer A and Programmer B could have almost identical styles, but that doesn't mean they have similar personalities.
Also it's not pseudo-science. There are real, live techniques for identifying programmers based on binaries:
https://arxiv.org/pdf/1512.08546.pdf