Analysis: Three Recurring Flaws in Every 'AI Will Replace Developers' Argument

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A software developer spent 30 days running a production SaaS application with AI writing 100% of the code, then reviewed hundreds of posts and essays on both sides of the AI-versus-developers debate. The experiment revealed that code generation — the focus of most arguments — represented only about 20% of the actual engineering workload, with the harder 80% involving judgment, validation, and architectural decisions. The author identifies a critical flaw shared by optimists and pessimists alike: both assume the career ladder from junior to senior developer remains intact, while AI absorbs precisely the entry-level tasks that have historically built senior expertise. Removing that foundational work does not flatten the professional hierarchy but instead eliminates the on-the-job training pipeline that produces experienced engineers over time. The piece concludes that the industry risks a future shortage of senior developers by quietly eliminating the roles through which that seniority was traditionally earned.

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