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Dunning–Kruger effect
In the field of psychology, the Dunning–Kruger effect is a cognitive bias wherein persons of low ability suffer from illusory superiority, mistakenly assessing their cognitive ability as greater than it is. The cognitive bias of illusory superiority derives from the metacognitive inability of low-ability persons to recognize their own ineptitude. Without the self-awareness of metacognition, low-ability people cannot objectively evaluate their actual competence or incompetence.[1]

As described by David Dunning and Justin Kruger, the cognitive bias of illusory superiority results from an internal illusion in people of low ability and from an external misperception in people of high ability; that is, "the miscalibration of the incompetent stems from an error about the self, whereas the miscalibration of the highly competent stems from an error about others."[1] Hence, the corollary to the Dunning–Kruger effect indicates that persons of high ability tend to underestimate their relative competence, and erroneously presume that tasks that are easy for them to perform also are easy for other people to perform.[1]

Although the Dunning–Kruger effect was formulated in 1999, the cognitive bias of illusory superiority has been referred to in literature throughout history.

Metacognition is "cognition about cognition", "thinking about thinking", "knowing about knowing", becoming "aware of one's awareness" and higher-order thinking skills. The term comes from the root word meta, meaning "beyond". Metacognition can take many forms; it includes knowledge about when and how to use particular strategies for learning or for problem-solving. T…

https://en.m.wikipedia.org/wiki/Metacognition

These guys must not have heard of Sandy Wexler or the expression, "fake it til you make it."
 ;D
(https://d2e111jq13me73.cloudfront.net/sites/default/files/styles/review_gallery_carousel_slide_thumbnail/public/screenshots/csm-movie/sandy-wexler-ss2.jpg?itok=K-ek5Z0O)