This is precisely what I’m saying: he previously swore to end death (not just Dementors!) but now he’s swearing to end Azkaban—a much smaller goal. In fact it’s insignificant in comparison.
I don’t think the important thing in Ch. 63 is that Harry changed his goals (you’re right, he didn’t really) but that he changed the methods he’s willing to consider. The long-term argument (since chapter 35) between Harry and Quirrell has been about the utility of democracy. When Harry declared himself with the 3 and against the 47, he is acknowledging (at least the way I read it) a willingness to become a benevolent dictator if necessary.
I don’t think the important thing in Ch. 63 is that Harry changed his goals (you’re right, he didn’t really) but that he changed the methods he’s willing to consider. The long-term argument (since chapter 35) between Harry and Quirrell has been about the utility of democracy. When Harry declared himself with the 3 and against the 47, he is acknowledging (at least the way I read it) a willingness to become a benevolent dictator if necessary.