Perhaps I've been somewhat too harsh: I don't see any particular 'ruthlessness' in Apple's actions. But I do think that its program, as well as many other bug bounty programs, can easily end up more byzantine in their rules than they'd otherwise be, since there's not much incentive counteracting such fussiness.
After all, one might easily imagine a forgiving rule of "we'll pay some amount of money (whether large or small) for any security issue we actively fix based on the information in the report", and yet Apple seemingly chooses to be more fussy than that in this case, unless they're just being extremely slow. I just don't see any way to square such apparent fussiness with your experience of bug bounty programs leaning toward paying out more.