This is so reductive as to be quite useless I think.

The "holy" books are all highly problematic, no disagreement. However, all those books can be read in many, many different ways. There is no single "correct" interpretation - especially since those books contain so many consistency and logic issues, that a logically sound direct reading is pretty much impossible.

I think religion has to be kept on a short leash. But so directly labeling their books as terrorist just increases hate on all sides and leads to even deeper divides.

With enough education, the worst parts of religion will solve themselves, as we have seen in almost all highly educated regions except the US.

Until then, I'd recommend to be less... direct. Because a deeply antagonized group is closer knit and much harder to break into.