The problem with articles like this is that it's in our natural tendency to think "oh this is me". Everyone thinks they are smart and we're not particularly good at successfully finding others who are smart (hence the hiring problem in this industry ). Instead we hire based on whether someone is like us, because we think we're smart so if they like me, they are also smart.
Articles like this will perpetuate that belief. Bad soft skills? Lack of a structured lifestyle? Cannot focus? Many people will relate to these because they take effort to build.
Though Wilson touches a good point. Medium levels of intelligence is require for most jobs, even in Investing you do not need to be that bright to be "the best" in the field. Additionally, we know now that novel ideas comes from a background process in your brain that takes a lot of time and domain knowledge to develop.