Let’s update political jargon. Writers still use “dog whistle” for a political message heard clearly by one audience but entirely missed by everyone else. That’s so twentieth-century. Please update to “teenage ring-tone”: Young ears hear it. Older ones don’t. Students yes, profs no. You can pick the tone that will be heard by the age group you want. But be careful: Some people have young ears.
The political equivalent is John McCain’s invidious “He’s the One” ad. Ostensibly, it merely suggests that anyone who inspires people must be a poor leader. (Well, don’t expect a Republican to remember FDR or JFK. But what about Churchill?)
But the message is really intended to ring loudly for dispensationalists, the subset of conservative evangelicals who are looking forward to the Rapture, the Tribulation, the whole timeline of approaching apocalypse.