I also have no idea what people mean when they say they are deontologists. I've read Alicorn's Deontology for Consequentialists and I still really have no idea. My current interpretation is that a deontologist will make a decision that makes everything worse if it upholds some moral principle, which just seems like obviously a bad idea to me. I think it's reasonable to argue that deontology and virtue ethics describe heuristics for carrying out moral decisions in practice, but heuristics are heuristics because they break down, and I don't see a reasonable way to judge which heuristics to use that isn't consequentialist / utilitarian.

Then again, it's quite likely that my understanding of these terms doesn't agree with their colloquial use, in which case I need to find a better word for what I mean by consequentialist / utilitarian. Maybe I should stick to "VNM-rational."

I also didn't claim to be an ultrafinitist, although I have ultrafinitist sympathies. I haven't worked through the proof of the VNM theorem yet in enough detail to understand how infinitary it is (although I intend to).