To be honest the boundaries of “left wing” and “right wing” defined in the United States are a bit unique.
The Democratic Party has such a broad spectrum that in most countries the “moderate democrats” would be right wing. Certainly moderate democrats would be the right wing party in Germany, UK or Canada. Note I’m not saying Far Right wing.
Edit- checking my citations around Universal Health Care- in 2024 Kamala Harris dropped Universal Health Care as a policy platform for the Democratic Party in the United States. That would put her platform further right on a major issue than the right wing platforms for the right wing parties in Germany, UK and Canada. So perhaps the Overton Window in the U.S. has moved the Democrats to the right of the right wing in those countries now.
It’s just the republican party in the U.S. that is so extreme right wing that it resets the field.
So back to the point saying AI systems lean more left-wing is an American point of view. The right wing in the U.S. rejects a lot of science and facts. So anything factual will lean left in an American view. In the global context I’m not so sure that is true. I’m not sure the study holds up when looked at broadly.
Edit:
Citation: Universal Health Care. In 2024 the Democrat nominee for president has a further right wing health care plan than the right wing parties in Germany, UK and Canada by abandoning universal health care as a campaign promise.
Political position on Universal Health Care:
German Christian Democratic Union:
https://www.cdu.de/app/uploads/2025/01/wahlprogramm-cdu-csu-kurzfassung-englisch.pdf
U.K Conservative Party:
Conservative Party general election manifesto 2024
Canadian Conservative Party:
https://cpcassets.conservative.ca/wp-content/uploads/2023/11/23175001/990863517f7a575.pdf
Kamala Harris:
https://www.politico.com/news/2024/...l-harris-progressives-2024-elections-00174447