I read the report the same way that you've read the report, and that is that there is a concern about a complete lack of scientific evidence and that because law enforcement agencies are not collecting data about responses on the front line, there isn't even a foundation to start with in order to determine whether there is profiling. There is a certain assumption that there is some profiling, and if so, has it been effective, etc.
What the literature has been able to determine is that in cases such as school shootings and terrorist attacks, there is such a lack of frequency that this kind of profiling has even less chance of being effective. Also, there is this chance of terrorist acts of substitution. In other words, while we're profiling males of a certain race, they substitute females suddenly—this sort of thing.