> Legalized organ markets would go a long way towards this end

No, it wouldn't.

The only organ you can donate in whole is a kidney. Estimates for a U.S. clearing price are around $15,000 [1]. (Higher in Iran, but mostly absorbed by brokers [2].) For comparison, between CARES, the 2020 supplemental and ARP the median American adult received around $3k ($5k including child benefits). That didn't go a third of "a long way towards" eliminating all poverty.

In exchange you create a monetary incentive for donors to lie about disease status and drug use.

[1] https://stanford.edu/~alroth/AMNews_Jan.28,2008.pdf

[2] https://www.frontierspartnerships.org/journals/transplant-in...

It would turn the poor into organ farms for the rich. It would also further incentive coercive organ sales and provide cover for forced organ sales.