Why do feature flags still use loose strings in 2026?

Every major flag tool lets you reference flags as raw strings. No types, no autocomplete, no validation (not out of the box at least).

You could type "checkout-flow-v2" when the flag is "v2-checkout-flow" and nothing stops you. It compiles. It ships. It silently breaks in production.

This is the problem VoidFlag was built to solve. Curious if anyone else has been burned by this, a typo, a stale flag reference, a name mismatch that cost you hours.

What's the worst flag incident you've had?