Kaj’s argument is that if you core goal is EA, then spending hundreds of thousands of dollars on cryonics or heart surgery is the normatively wrong answer. Getting the wrong answer more often is worse than getting it less often, even when the price is a bit of inconsistency or doing-the-right-thing-for-the-wrong-reasons. When large numbers of lives are at stake, feeling satisfied with how cohesive your personal narrative or code of conduct is is mostly only important to the extent it serves the EA goal.
I endorse this summary.