Because he was a Catholic, his natural first impulse was to print the Bible he knew well and was raised on.
His invention enabled Ximenes Cardinal Cisneros - when Luther and Tyndale were children - to print the first critical polyglot edition of the Bible.
It is a myth that the European civil war known as "The Reformation" was due to some mythical "rediscovery" of the Scriptures which Christian Europe had always known, studied and revered.
The Reformation was a political struggle.
England was a Protestant society (before it became the atheist society it is today) solely because Henry VIII and the new nobility he created wanted to seize the lands and the properties of the clergy.
Henry VIII's opportunistic conversion and the opportunistic conversion of his hand-picked elite not only gratified him sexually with as many wives as he desired, but it made him and his court the 16th century equivalent of billionaires by seizing the real estate and possessions of tens of thousands of his subjects in an act of outright theft.
The most amusing thing about Protestant mythmaking is the notion that an absolute monarch with the power of life and death over his subjects unilaterally naming himself the divinely ordained master of the church in his own realm - thereby combining all political and religious authority in one man's iron fist - was a "liberating" break from "Popish tyranny."
bfl
You mean Gutenberg's Bible didn't declare Henry Tudor to be the [sic] "Supreme Head of the Church in England"?
[gasp]