AI is clever enough today to write perfect articles, but not by default. You have to include everything you want in prompts.
By default, no AI is going to cluster your keywords properly unless you provide it in the prompt. It's not going to prevent you from writing articles that cannibalize each other because they are too similar, unless that is in the prompt. It's not going to silo your content into proper site structure unless it is in the prompt.
They won't have EEAT unless you provide resource documents and ask it to write in a tone that reflects the author you want them to emulate.
You can create an agent in openai, for instance, and provide it with many gigs worth of data about things it should know when it writes your articles.
You can tweak the output to be best optimized for SEO.
But you're not going to go to any AI service and ask it to write an article about (keyword) and expect that it will be be anywhere near as effective as ones that were created with proper prompts that cover all the bases good onpage SEO will require.