Well, since you seem to be an expert, how about giving the guy some advice. I know the part I posted works. Seen the car, driven the car, love the car.
Now, I know, a lot of things can be interpreted as a knock, as you said, and sometimes you don’t want a quick knock – even a real one – to retard timing. That’s why many run an inline switch to disable the knock sensor. It’s needed for startup, since an initial check is done, but at the track many flip their inline switch to disable the signal. Also, you have constant knocks you know it. So, it's not like you'll be driving around not knowing your new engine is knocking the life out of itself.