The alternative is real world examples, which are generally going to be even messier. It was not an attempt to make “an argument stick”, it was an attempt to give an example to help to illustrate the concept under discussion.
The point of CRT isn’t to give you an answer, it is to give you a framework to look for the answer.
You can change variables and now it is a racist policy, and now it is an anti-racist policy, there’s nothing special about that.
The point was to give a policy that on the face of it, had no racial bias, but in context, had racially biased effects.
But yes, the point of viewing things through a CRT lens is to actually ask these questions about a policy, rather than assume that as long as the policy itself has no racial bias, it is neutral.
And I really don’t see how any policy can be neutral. The point of any policy is to change how people act, how they are compensated or rewarded, or how they are treated. There is no way that a policy is going to have the same effect on everyone, there will always be some who benefit more, or are diminished more. There is no such thing as perfect balance.
Now, you can certainly have policies that are “close enough”, that they don’t seem to have a disproportionate effect, or that effect is minor enough that it’s trivial, but that doesn’t mean that it’s not there.
The point is that yes, anyone implementing any policies should consider it in the context of a racially biased system.
You seem to be thinking that CRT is some sort of formula or equation to apply to policies, when it is not. In its simplest form, all it is is to ask people to think about things in context, rather than in a vacuum.