just to maybe say what that other person said in a different way:

carbon isn't emitted at the point of consumption, it's emitted at the point of production. if you don't buy a new phone or a plastic toy the carbon from its production doesn't go away it's already been released.

and before i say this next part i want to stress that boycotts don't work except when paired with other more militant movements.

if you and everyone else stops buying a new phone or a plastic toy then the factory doesn't close down and get rehabilitated, it changes hands and the new owners make something with less environmental exposure, like plastic pipes or mine detonator circuit boards.

the way to stop our emissions is at the point of production globally, not at the point of consumption individually.