Same. Blind Monk is just the treasure guardian version of Wokou Monk.
The point is, the rebels of the White Lotus are not real monks, but Liukou who use the name of religion, or peasants who became Liukou.
Rebellions in the name of religion, such as the White Lotus Rebellion, the Nian Rebellion, or the Taiping Rebellion, are not like the religious wars in Europe, but more just use religious superstition to incite the people. Many of those insurgents were not really uprising for religion.
This can’t solve the problem.
The problem with Manchus becoming mercenaries is that they are nobles of the Qing Dynasty, but they can be used by other civs to fight against the Qing Dynasty. If they become a native tribe, this is still the case. Besides, they should be one of the cores of Chinese civ and should not be natives, just like when the Iroquois, Sioux and Aztecs became the civs, their minor civs were replaced with the Hurons, Cheyennes and Zapotecs.
In my opinion, the Manchus should become something like the Spahi or the Urumi Swordsmen, powerful unique units shipped from home city for Chinese. Or, put them into the potential Chinese isolationist option of the consulate. In short, let them be units that can only be used by Chinese civ.
On the other hand, Mongolian Horsemen can be created to replace the previous mercenary position of the Manchus. This would be a reasonable choice since the Mongols had rebelled against the Qing Dynasty and Russians used the Siberian Mongols.