@mcc A lot of the issue is also to do with being deliberately sloppy about 'possible' like, do you mean modality, and if so which one? Or is it some kind of quantification, and if so what are the details? Or is it a simple predicate? - eg doing moral reasoning that treats an imagined 10^80 possible intelligences in cyberheaven as real actual present existing people, which is nonsense.
@mcc They have to selectively move between meanings of 'possible' at different parts of their argument and their deliberate sloppiness (and logically invalid moves) are disguised with a heavy layer of the aesthetic of logic.