I think you should write alt.history historical fiction. You have an elaborate engineered society but is not reflective of this planet. I think you would do well in that genre.
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https://en.wikipedia.org/wiki/David_Lewis_(philosopher) version of parallel worlds (which are non-interactive and non-interfering) can be a philosophical base which would allow you do do anything without conflict in this reality, avoiding all of the “whatabout” criticisms.
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