The etymology is fuzzy, but Ted Lasso blasted the term into the spotlight this week. Keeley: Oh. But I can't fire Shandy. She'll hate me. And she really thinks she's killing it. Jack: Oh, I am sure she does. The worst people often think they're the best. My dad calls it "talent dysmorphia."
Feels very adjacent to Dunning-Kruger (https://en.wikipedia.org/wiki/Dunning%E2%80%93Kruger_effect) and have had cases where folks who are new to a subject area never advance beyond the Handholding Honeymoon and learn enough to get into the Desert of Despair (http://robertorocha.info/how-to-survive-the-desert-of-despair-in-your-code-learning-journey/)