The only solution is to fit a 300W LED bar and consistently flash those guys until they are bothered enough to go into the menu of their computer-on-wheels and turn off this "feature".

...or piss those guys enough that they will call police on you for blinding them and creating a road hazard, or someone unhinged enough gets pissed off and will follow you, after which your behind will dearly regret buying such a long LED bar.

This is the same kind of useful advice as the one to brake check those whose driving style you don't like very much, fight (real or perceived) road hazard with deliberately creating more hazard.