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His claim is that stealth only works against radars in a particular frequency band, and that long-wave radars designed to defeat it can do so easily. Saddam Hussein didn't have those; the point is that the F-35's adversaries (anyone with an air defense system designed after the F-117 went public) likely do.

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Long wave radars are fine for early warning. (e.g. HEY! There's some thing out there!) But they can't help you figure out where it is exactly. (e.g. guide an anti-aircraft missile to intercept).

Disclaimer: I think the F-35 is total scam. But this is about stealth

You can also reduce your effective cross section to long-wave radars by splitting the hull into non electrically connected areas. If there is no electrical contact there is no resonance effect for that particular frequency. Who knows, maybe some aircraft eventually will use it.

Stealth as a generic concept is not ruined by long wave radars, the current designs might be. It's traditional arms race.

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