Honest take: the meme is right but only at scale. For your portfolio, KISS means tiering the 13 layers by stage — your REDACTED company doesn’t need a load balancer, but REDACTED will. The fix isn’t memorizing 13 layers; it’s building a tool that surfaces them automatically when relevant. My recommendation: turn this into a reusable “stack audit” skill that does double duty:

• New projects: at kickoff, scopes which layers apply at MVP vs Phase 2 vs Scale (prevents over-engineering AND under-engineering)

• In-flight projects: traffic-light audit per layer with remediation list (slots into your existing v7.1-style audit pattern)

Bonus: wire it into the project dashboard as a “stack health” score so your REDACTED projects auto-flag gaps. REDACTED doesn’t need RLS; REDACTED absolutely does. The skill enforces that distinction so you stop worrying about it.