All of these technologies are being integrated into professional toolkits in ways that make sense when they're polished enough to be professionally useful... and for the foreseeable future, that's how it will stay. Beyond the high-volume low-effort work on places like Fiverr, commercial artists and designers are valuable for their ability to think conceptually and make the artistic decisions about what goes on the screen, where, and why. The how is an implementation detail. Designers dropped balsamiq in favor of sketch in no time flat, and then dropped sketch in favor of figma even more quickly. Adobe XD, capable and included for free in an ecosystem they already use, it's barely in the conversation. These are fields where people readily adopt new technology that suits their needs but the current tools aren't even in the ballpark.
Being able to quickly generate and iterate on assets is great for inspiration but pretty useless for professional output without fine-tuned, predictable, repeatable controls. These tools will simply integrate with existing professional tools until they can do it better.
Imagine the first person to make an electric saw made some automated thing that could cut the wood to make a cool looking flat pack house somewhere in the neighborhood of your specifications in 5 minutes. The caveats: while it would assemble perfectly, the actual angles of the cuts might be unpredictable... Like 40 and 50 degrees rather than 45 and 45, and the layout was never quite what you expect even if it was OK more often than not. Pros knew those were fundamentally deal breakers for professional work, and remained more professionally useful with their hand saws because they had the required precision, control, and predictability. While enthusiasts were gong crazy exploring all of the different kinds of oh-so-slightly wonky structures they could generate and predicting the end of carpentry, the old school saw companies started making circular saws, chop saws, drills, and the like. The market for handyman-built dog houses, sheds and playhouses would immediately be lost to the automated machine but I guarantee you that all consequential work would still be done by carpenters with power tools.
I agree that for the foreseeable future designers / commerical artists will have to overall decide "what goes on the screen, where, and why", but not anymore for all smaller scale details. Generative AI automates creativity at least to some extent, which is qualitatively different from past developments. The example with the island tortoise on the Adobe website is not a real demo, but it doesn't seem far away.
https://www.adobe.com/sensei/generative-ai/firefly.html
This sounds all very similar to the Stable Diffusion tool chain, though probably cloud based and with a more intuitive UI on top.