I think this is a step beyond that - why should people be creating cooking websites when you can ask LLM how to cook given thing, while indeed, serving their own ads. It's the continuation of "we own content other people produce" policy
Can you really though? Are the results delicious? I've never tried that.
That being said, an LLM can give creative ideas, mix and match components, but you should not trust the details at all.
Block Googlebot from your sites.
Let's go back to webrings.
They killed their competition and now they will give you the product that gives them the most money.