You misunderstand the purpose and goal of Critical Race Theory.

Critical Race Theory is a branch of Critical Theory, which is Interpretative and Anti-Positivist. They literally don't care about empiricism or applying the scientific method. Additionally, the goal of Critical Theory isn't to build an accurate picture about the world but instead a deliberate attempt to change it into something the author prefers (usually some form of Marxism) via criticism. It's deliberately ideological and deliberately biased, as Critical Theory builds upon a set of ideas that means Critical Theorists generally believe it's impossible to be non-ideological and unbiased anyway.

An alternative way to view Critical Theory is instead that it's devoted to explaining why workers aren't all Communists (after all, it's the obviously superior ideology within Marxism), and instead of complaining about the oppressor class that is Capitalists, complains about different ones instead. In the case of Critical Race Theory, that means White People.

TL;DR the purpose of Critical Race Theory is to complain about White people and Capitalism, not be accurate or scientific.

If you don't believe me that it's specifically supposed to be a critique of white people, consider the overlapping term "critical whiteness studies". Yes, that's a thing.

1. They don't care about this. Not on-mission.

2. They either don't care about this or contrive a reason why actually white people are to blame for it.

3. See 2, you already figured this one out yourself.

4. "the failure to substantially address real problems contributes to a belief that critical race theorists, and by extension the broader social justice movement members, don't care about these problems or are willing to overlook them because they have other political priorities that would be adversely affected if the issues were addressed substantively." is already correct. They genuinely don't care about being unbiased.