I am not sure how you can be so derogatory yet apparently so ignorant. Have you even seen what DALLE-2 (or imagen) can generate? DALLE-2 does not have to 'prove itself' it is clearly on-par with human designers in terms of quality and price. There even is a product on the market right now called Midjourney that is worse in quality than DALLE-2 yet is growing incredibly fast and already breaks even economically.

If NLP tasks make a similar jump in quality as DALLE-2 did when compared to DALLE then they too might disrupt the writer industry.