I agree, insofar as I think "I should not smoke" is true as long as I'm also allowed to say "I should not have the lesion".

The problem is I think running into the proper use of 'should'. We'd need to draw very sharp lines around the things we pretend that we can or cannot control for purposes of that word.

Basically, you end up with a black-box concept containing some but not all of the machinery that led up to your decision such that words like 'should' and 'control' apply to the workings of the black box and not to anything else. And then we can decide whether it's sensible to ask 'should I smoke' in Smoking Lesion and 'should I one-box' in Newcomb.

Right now I don't have a good enough handle on this model to draw those lines, and so don't have an answer to this puzzle.