I'd dismiss this chest-thumping as simply annoying except that by calling the situation a war, they are implying that "true" Christians are justified when they participate in violence against those they label as enemies of Christianity.
The premise that opposition to any action or belief held by any conservative Christian is opposition to Christianity is deeply troubling even if it doesn't lead to physical violence. It implies that conservative Christians accurately reflect God and the purest form of Christianity.
But we all fall short of the glory of God.
Instead of drawing Christians who have been used or exploited by their fellow Christians closer to their faith, this warmongering pushes them away.