Genovese's sometimes "loose liberty"

At the risk of being overly critical and in even a well-researched work at that, yet in order to raise an instance where Genovese seems to take “loose liberty” in support of his overall thesis without providing a minimum amount of direct evidence, or, without making a direct connection between sources and his conclusion in a certain instance, I refer to the section, “All Negroes Are Fatalists” (pp. 637-648). Genovese says on p.641: “In other respects, too, the slaves’ fatalism and apathy became weapons of resistance embodying the opposite of that loss of will which so many have read into them.” Question: what weapon of resistance as a result of the slaves’ fatalism is he referring to? A turn away from medical care?” (637-638) A lack of suicides among the slaves? (p. 639)  A rejection of self-pity? (p. 640) I don’t see how he asserts that fatalism and apathy were weapons of resistance by the slaves unless, per his thesis, the slaves’ fatalism and apathy were instrumental in establishing and resulting in some paternalistic reciprocities. What reciprocities were being established? Am I missing something?