Christian missionaries do speak against it MN:

Anika Rahman and Nahid Toubia write that attempts in the early 20th century by colonial administrators to halt FGM succeeded only in provoking local anger.[61] In Kenya, Christian missionaries in the 1920s and 1930s forbade their adherents from practising it—in part because of the medical consequences, but also because the accompanying rituals were seen as highly sexualized—and as a result it became a focal point of the independence movement among the Kikuyu, the country's main ethnic group.[62][63] One American missionary, Hilda Stump, was murdered in January 1930 after speaking out against it.[64] Lynn M. Thomas, the American historian, writes that the period 1929–1931 became what is known in Kenyan historiography as the female circumcision controversy. Protestant missionaries campaigning against it tried to gain support from humanitarian and women's rights groups in London, where the issue was raised in the House of Commons, and in Kenya itself a person's stance toward FGM became a test of loyalty, either to the Christian churches or to the Kikuyu Central Association