The way to use AI is to make sure it has clear, verifiable success criteria, test suites, etc. Make sure any output has citations, reduce the need for trust to zero, etc.

I see people one shot stuff and it makes no sense, is completely fake half the time, just like you point out.

It should be the case that Codex and Claude Code should incorporate this kind of thing automatically at some point.

Claude Code more or less does have the tools to do this: plan mode, todo lists, user question prompts, et al. What it does not have is a "guided" mode where the agent (or harness) interviews you and helps you structure a work plan for the agent, including eliciting those success criteria and any design constraints the user might have in mind (eg it will be used on a boat over slow satellite connection). I can't speak for OpenAI but I get the impression that Anthropic think of these things as opt-in power user features, perhaps on the premise that their LLMs alone are "smart enough".