The accuracy of a writer’s or artist’s self-assessment on how new, original, and groundbreaking their work really is…is likely proportional to their skill and experiences in that field.
The new artist who thinks they’re invented a metalworking technique known for hundreds of years. The erotica author who wants to invent a ‘new’ form of erotic writing that is actually the oldest and most standard form. Anyone who excuses obvious flaws as a necessary part of process.
A form of the Dunning-Kruger Effect, folks.