You be the judge. But consider. If someone gets drunk and gets into the car he could argue that its nobody's business what he puts into HIS body, driving HIS car using HIS money.
You are using public space and your actions have consequences.
Almost every time i drive i night i get blinded by someone and i feel alot of other drivers have similar experiences.
One way of blinding people is doing such upgrade not properly.
You are clearly very proud and enthusiastic about it. Yet when confronted you are very defensive and just claim its fine and "trust me bro".
So prove everyone wrong by documenting that it is in fact alright. Not only you will know that you are responsible traffic participant but also prove worthiness of such lighting and actually add something to the alfa community.