Yeah, despite the wording, I suspect they are looking at the patterns of use with smart meters rather than just "high amounts?" Grow op houses would be easy to see, as they only use power when the lights are on, flat usage, because no one is actually living there. Do you run lights 24x7 with indoor growing? idk. The trouble is, any system like this will catch a few, then they will relax the constraints to "catch more" and boom, now you have false positives. The criminals will also figure it out and mask their usage better by cycling banks of lighting, using batteries, parking some EVs in the driveway or whatever. That cat-and-mouse game will just see increasing privacy invasion and more false positives.