YOU THINK WAR END SOON. GO AHEAD TAKE DAY OFF" poster
The pattern
This still is filed under Us-versus-them positioning.
Define
The buyer is invited into a side. The product is what we use. The named other is what we refuse.
Mechanism
Identity contrast. Choosing the offer is choosing a group. The out-group does as much work as the claim.
Verdict
The category is crowded
Why it works
It targets a specific objection (the belief that victory is imminent and extra effort isn't needed) with a mocking tone from the enemy. It uses reverse psychology and enemy personification to induce guilt and urgency.
Steal this when
You need to combat complacency by showing how premature relaxation benefits the opposition.