Doing another search, it seems I made at least one comment that is somewhat relevant, although it might not be what you’re thinking of: https://www.greaterwrong.com/posts/5bd75cc58225bf06703751b2/in-memoryless-cartesian-environments-every-udt-policy-is-a-cdt-sia-policy/comment/kuY5LagQKgnuPTPYZ
Doing another search, it seems I made at least one comment that is somewhat relevant, although it might not be what you’re thinking of: https://www.greaterwrong.com/posts/5bd75cc58225bf06703751b2/in-memoryless-cartesian-environments-every-udt-policy-is-a-cdt-sia-policy/comment/kuY5LagQKgnuPTPYZ