In the comments, Two Things writes:

1. If your book about poverty doesn’t discuss IQ then it will be worthless, or nearly so.

2. If your book blames poverty in underdeveloped countries on the
immigration policies of developed countries then it will have negative
worth, because of the risk that some low-IQ reader might believe you.
Even if you think bad institutions produce poverty, one country’s
immigration policy cannot prevent the people of another country
adopting better institutions.

Replies:

1. I will discuss IQ as an important but largely non-blameworthy cause of poverty.  But the whole point of the book is to focus on causes of poverty that ultimately come down to bad choices.

2. First World immigration restrictions don’t prevent Third World countries from adopting better policies.  But they do wrongfully prevent the victims of the Third World’s bad policies from escaping them.