If you read the fallacy you’d realize that you fell into the false fallacy fallacy.
To quote your linked article:
No true Scotsman or appeal to purity is an informal fallacy in which one attempts to protect their generalized statement from a falsifying counterexample by excluding the counterexample improperly.[1][2][3] Rather than abandoning the falsified universal generalization or providing evidence that would disqualify the falsifying counterexample, a slightly modified generalization is constructed ad-hoc to definitionally exclude the undesirable specific case and similar counterexamples by appeal to rhetoric.
There is plenty of countries with a christian background and still majority christian population, that wouldn’t even think to discuss such absurd policies. American nutjobs cannot be considered to be representative of christianity as a whole. Much of their nutjobbery is specific to them.
fastandcurious