That's a fair conclusion. One of its features is that you know whether the person didn't comply with the condition of location or time, such as with a curfew. It's very accurate when it's used to determine whether they're at a specific location, such as their home. That's one of the things it's very good for.
You mentioned the idea of correctional programs. Correctional programs have been shown to be highly successful at reducing recidivism and to be cost-beneficial as well. There is research that demonstrates that, contrary to what the first witness responded.