I've been boycotting Amazon as best I can for nearly a decade though since they had ambulances outside their warehouses and delivery workers pissing in gatorade bottles but reducing consumption of toxic brands can be done and is effective at sending messages when done en masse.
I also boycott all the social media companies, Disney, Google as much as possible.
Sadly, there's not a ton of options in this space (computer electronics).
I've also e-mailed tim.cook@apple.com and expressed my opinions in a polite manner. Maybe someone read it. Who knows.
Stand up, fight back!