In my view, the Baha'i have done absolutely nothing to date that wasn't already being done by other people and groups. One common lament by ex-Baha'is on it was 'all talk and no action'. One fellow said that the only charity ever done at his LSA was maintaining a section of road, and that was only so they could get a sign up on the highway advertising it. Baha'i like to take credit where it isn't due, like having massive influence on Gandhi, King, and others, which is just false propaganda.
Individuals, however, may well be very charitable. We're not privy to the efforts of a generous humble anonymous donor. In my view, if you need to make noise about charity, then it's not real charity. It has strings attached.
There are many massive charities like Doctors without Borders, Amnesty International, and the Red Cross who are first responders, and will go where others won't.