[*]Lae'zel's writing revolving entirely around her and her culture being savage and evil and stupid.
Larian portrays the Gith as per Forgotten Realms canon, including their appearance and cultural characteristics. Far from stupid the Gith as we are constantly reminded have access to extensive knowledge. Yes they are martial, violent, and arrogant, but that is how they are supposed to be portrayed.
Plenty of vanilla "white" characters are portrayed in a negative light.