I don't know why behavior like yours exists. Nobody knows why X is happening but people notice that a potential solution Y is only possible if Z is true. Then someone says Z is wrong and therefore we lost all our agency and ability to solve X.

If this was too difficult to understand then I'll explain it differently. If there are environmental differences between races such as socioeconomic background then you can fix things like educational attainment by improving the socioeconomic background of black people. If there is no environmental difference or solving the environmental difference gives no improved outcomes then this basically means black people are somehow inferior to white people simply based on their race. I don't think that is true. Poor white people suffer from the same things poor black people suffer from so an explanation that is purely based on race is completely insufficient. However you want to deny the socioeconomic differences and blame the differences in ability entirely on race.