A review by Holland in The Spectator - it reminds me of my disappointment in finding out that the satanic goat baphomet may have been inspired by paranoid french islamophobes from the middle ages.
Scholars in medieval and early modern Europe rarely wrote about Muslim history because it was the primary focus of their concerns. ‘Many of these authors,’ as Tolan puts it, ‘were interested less in Islam and its prophet than in reading in Muhammad’s story lessons that they could apply to their own preoccupations and predicaments.’ Peter the Venerable, when he condemned ‘Mahomet’ as the prince of heretics, was quite as anxious to reclaim Spain from the Moors as he was to combat the spread of heresy in Christendom itself. In 17th-century England, pamphlets about Islam were invariably disguised polemics about the monarchy, or Cromwell’s protectorate, or the Church of England. Voltaire’s condemnation of Muhammad as the archetype of fanaticism was aimed, principally, not at Islam, but at that perennial bugbear of his, the Catholic Church.
https://www.spectator.co.uk/2019/06/hostility-to-islam-has-disguised-a-host-of-other-prejudices/