Ok, I'm not that sorry to say it, honestly; Islam is the Mormonism of the Abrahamic religious triad, except its founder is even more of a monstrous pedo.
All the same, I appreciate the way of thinking: "Let's adopt the hardline traditionalist religion; that'll show the Left!"
Except, it won't. The power that Islam currently holds is completely dependent on the hyper-hypocritical Leftist doctrine of Intersectionality.
A bunch of lily-whites start praying to Mecca, and Islam loses the protective status it has as a 'po' widdle oppressed brown people religion' and instantly becomes the target of every wailing blue hair from here to Saudi Arabia. Or, at the very least they might try to differentiate between "White" Islam and "Brown" Islam, which would still cause some of the later to be targeted by the smoothest brains, and would result in some wrathful retaliation, but I digress.
Either Christianity is reclaimed and goes full Crusade mode, or Populism becomes the de facto religion of the Right.
Unless the Caliphate comes into full prominence, in which case, hand me my Pulwar and let me grow out a shitty beard.
Islam isn't a cure, but those who follow it are. Not a good cure, mind you. Modern civilization ending stuff. The burning of Alexandria level stuff.
It won't be because of any virtues other than conquerors taking advantage of a culture that deliberately weakened itself in the name of an equality that defies nature and sensitivity that defies in-group preferences.