Yup, and I'm one of them!
Passive Bi-Amping and Bi Wiring both are a waste.
Doing it correctly is all fine and good, no harm should come to your gear.
For all the time I spent researching this and talking to others, the simple fact is that nothing measurable happens when you do either of these things. In fact several Professional Speaker Designers I've spoken with scoff at the idea of either.
As for this:
The theory is that the impedance caused by passive speaker crossover will force the low frequencies and high frequencies to split at the amp instead of at the terminals.
Not even possible. Physics doesn't work like that.
Yes, there will be different draw through each cable going to the High and Low circuits, but the full signal will still be transmitted. It is just the load that will change based on the circuit being fed. Still, no measurable audible benefit has ever bee found.
Regardless, experiment away if you choose.
