.....the most I've ever seen is someone go for the mirror if I am behind them...if I see that I switch to low beam and shut the modulator off. Even if they are annoyed, AT LEAST THEY KNOW there is a motorcycle behind them and may glance back before making a sudden stop or changing lanes.
I have never experienced one pissed off cager doing anything aggressive to me as a result of the modulator. The most I've had is folks occasionally leaning out the window at a light asking me if there is something wrong with my headlight.
I'm pretty sure my high beam, oscillating between 80 and 100% which is what the Kisan does has never blinded anyone, as it only works during daylight hours and shuts off automatically at dusk with a photocell.
What can I tell you, having the odd cager pissed off (as you claim) sure beats the hell out of all the crap that used to happen when no one could see me.
"Whisky is manís best friend...whisky is a bottled dog".
Vinicius de Moraes