The problem is that virtually all those things could harm, interfere with, or annoy human activity.
In the context of how to respond and if possible disabled a weaponized remote controlled aircraft, I think being dead or seriously wounded also interferes with human activity. These proposals aren't-I didn't get the impression at least-meant to be implemented and operated persistently, but applied into purpose-built apparatuses to disrupt a hostile remote controlled aircraft.
That's a context I'm willing to trade having my phone work for a moment if there's a DJI Phantom dropping bombs over Boston (I beg humor for the hip-hop hyperbole) being taken out of commission before someone gets hurt.