A better way to look at this is to recognize that geopolitics involve a multitude of political, economic, cultural, etc aspects. It's not that the US cares nothing for human rights violations, it's that we often prioritize different aspects. Caring does not imply a specific action.

Absolutely not trying to justify the relationship between the US and UAE. However, a maximalist position rarely leads to a positive change when so many parties and ineterests are involved.