Dear Mat,
The titling of a piece "Matthew" and letting people from later times assume it was perhaps Matthew the Apostle who wrote it is not the sort of thing we condone today, but it was frequently done around the 1st and 2nd centuries. Gospels of "Thomas" and "Peter" etc.
I think the contempory readers viewd this subterfuge a little less harshly than we would today, that is why I find the use of the words "fake" and "lies" just a little out of place, though they are in fact accurate to a great degree. We do not know how much the writers set out to deliberately mis-lead their readers.
I personally feel that The Gospel of Matthew, which is why I use it as an example, was written to deceive to a great degree, in that its motive force is the expansion of the Jesus cult, the growing of the Jesus myth, not an attempt to record truth.
The more important point you make about world leaders and others basing their decisions and actions on books of doubtful, or vitually no, provenance, like the Bible and the Q'uran, is a valid and quite frightening one, but you are spot on.
I would prefer my leaders to be educated so as to make decisions,and take action, based on rational well informed appreciation of the circumstances and problems they are dealing with.
Any action taken, or belief held even, based on myth, legend and out of date wisdom has got to be asking for disaster.