AFAIK it's the opposite. Low frequency early warning radars are able to detect the vague position of stealth fighter jets (like the F-35) because these jets need a vertical stabilizer to be able to do combat maneuvers. Knowing the vague position is good enough to route intercepting aircraft towards the threat but in theory you will be unable to target these jets with AA missiles because targeting radars can't see these jets until they're very very close.

Flying wing designs like the B-2 and B-21 don't have this issue and are mostly invisible to early warning and targeting radars.