If every single car flashed you, that is not a good thing. That is a very bad thing.
First thing you must do is to aim that light correctly. If the beams cut off is so bad that it can not be aimed correctly, then it should not be used. Brightness does not blind oncoming drivers, poor aiming will. Do you really want to be blinding something that is coming at you with a closing speed of over 100MPH and is way heavier than you. Most people when being blinded by bright lights close their eyes and hope for the best, it is the natural reaction of the eyes to protect themselves, not to mention that you just wiped out their night vision so they will be blinded for a few minutes whiles their eyes readjust.
I have never yet changed a headlight and not had to make some adjustment to the aiming.
My truck has over 300 watts of HID lighting which is many times brighter than your LEDs and I have never been flashed, but I took the time to aim them all correctly.
Sorry for the rant, improperly aimed lights are a pet peeve.
Please, if you are going to do it, do it right.
If you are going to at Dons MD I will be happy to help you get the aim correct.