Found a research paper a while back measuring the impact of being nice to AI on search result.
If i remember correctly it basically said that being moderately nice leads to “better’“ results since the AI would be more inclined to search on website where more polite people were posting/debating, thus on average leading to “better” results, compared to places like twitter and such. But being overly polite didn’t actually made the results better and sometimes worse.
I’ll post a link if i can find it.