Agreed mostly. But again the picture is more complicated than what a single sentence or two can convey.

Curiously, many of the lethargy, idleness and sense of pointlessness came through sufism. Sufism itself has also many roots (including Greek, and later Andalusian twists), and has a wide spectrum. Ghazzali (the author of The Incoherence) himself was heavily affected by Sufi themes before he wrote 'the Incoherence'; but that book, a rationalist attack on some form of rationalism itself, has many valid points though.