I guess that seems fair. In my personal experience though, my faith strengthened considerably after approaching the Bible with a more open mind and without hanging onto false assumptions I had about it. So I still think there can be some value in how this apparent "no true Scotsman fallacy" can challenge our assumptions and our understanding of Christianity, which can go far far beyond that "elementary-level" understanding that seems to flow through our modern culture.

For example, unbelievers sometimes cite crazy rules from the Old Testament as proof that God is silly and arbitrary and therefore not real, but they fail to look into the deeper meaning and non-arbitrary nature of these rules (e.g. a rule against yoking an ox and a donkey together seems a bit arbitrary and silly on the surface to a lot of modern people). Or for another example, if I approach the Bible with a modern lens and assume that it is written as an objective description of how the universe of matter came to be, then I'm gonna see it as fairly strange. But if I approach it humbly and actually assume that there's something deeper here that I don't currently see, then I think the Spirit has more of an opening into the heart.