Doug,
If you rode a bike equipped with headlight modulators; you would see the difference. In the city or suburbs; you would be aware of it within the hour of first riding with them.
You would see and observe cagers observing you; in a new manner that you have not experienced before. Because you are a visual exception to what cagers are normally expecting. You are more noticeable. That is precisely what you and the rest of us want. For your motorcycle to be noticed.
Whether your motorcycle is liked or not because of it; is a completely mute issue. There are people out there whom just hate motorcyclists period. But I'd rather occasionally annoy someone with a Modulator and be noticed; than be carried to my grave by six others; because I was not seen. If I only had a Modulator....
And let us be clear on one thing. Headlight Modulators do not flash. They modulate the intensity of the light from 100% to 17% and back; within a prescribed amount of time.