This is an excellent point, however, the question remains: what group of Sufis do you think represent the sort that Shaykh Ibn Taymiyyah spoke about in his Majmoo al-Fatawa? If you could substantiate this with quotes from his Majmoo al-Fatawa, then please go right ahead- perhaps he named or specified a tariqa that he was in favor of, and enumerated upon its practices- this would help in differentiating the Sufis who have deviated strongly from the Sufis who stuck strictly to practices found in the Qur'an and Sunnah. It would also help if you connected it to the Sufis of today- perhaps which group it was then and whether their practices are the same now as they were then.