ok. I think it's more worthwhile to spend that time trying to bring the company down, not wasting 1 guy's time, out of hundreds or perhaps thousands.
If everybody tied these people up uselessly, then their business model would become untenable and they'd have to think of some other scam.
That's entirely fair (and I think you're right, if your goal is to mitigate their harm as much as possible), but you were previously arguing that it was actually bad to screw with these people, not just a sub-optimal use of time.