20Product: Why Most CPOs are Bad | Why You Do Not Need PMs in a World of AI | Why the Design Stage is Dead and How to Use Vibe Coding to Replace It | The Three Roles All Founders End Up Firing on Repeat with Jason James @ Tezi

What It Covers

Jason James, Tezi cofounder and former Instacart VP of Product, explains why most CPOs fail, how AI eliminates the need for traditional PMs and designers, and which three roles founders repeatedly fire.

Key Questions Answered

• •Scale vs Innovation: At Instacart's $30-40 billion GMV scale, AB testing and optimizations delivered minimal impact compared to new capabilities like Snap EBT, which became a $4 billion business line within a year, fundamentally changing resource allocation strategy toward breakthrough features.
• •Hiring Without PMs: Early stage companies under 50 people don't need product managers when engineers and designers can own business decisions. Use fractional 15-hour-per-week senior talent to fill specific gaps rather than hiring full-time PMs as default organizational structure.
• •MVP vs Full Build: Breadth-first products like full lifecycle tools require complete builds at A-quality, not MVPs. Launching 12 half-finished features creates perpetual maintenance debt that prevents shipping new capabilities, requiring six additional months before market launch for proper execution.
• •Vibe Coding Workflow: Design phase becomes obsolete with AI tools like Magic Patterns for rapid prototyping and Cursor for engineer implementation. Designers articulate intent through prompts, engineers code prototypes directly, collapsing traditional design-to-development handoff while maintaining A-quality shipping standards.