It's not. Gates' "charity" does an incredible amount of damage, and also destroys a lot of positive change that would otherwise be happening. For example, he was instrumental in ensuring an open-source COVID-19 vaccine didn't get released, in a way that potentially denied access to COVID vaccines to millions—perhaps billions—throughout the Global South, in the interests of protecting the profits of big pharma. His diversion of education improvements into private and charter schools is pretty infamous for destroying attempts to improve public education...all so that education can be repurposed into creating good, obedient, unthinking workers for capitalist industry. And a lot of his "food programs" and "vaccination programs" throughout Africa have done a great deal of damage to the general public trust in such programs, while arguably doing as much harm as good materially as well.

You might want to do your homework. Here's a start:

• Maybe Bill Gates’ Billions Don’t Make Him an Expert on Hunger in Africa
• Gates Ag One: The Recolonisation Of Agriculture
• Bill Gates's vaccine monopolism is a global health disaster
• Prisons and Slavery: How Bill Gates, the Gates Foundation and Microsoft Profit From Racism and Human Suffering Part 1: The Prison Connection
• Prisons and Slavery: How Bill Gates, the Gates Foundation and Microsoft Profit From Racism and Human Suffering Part 2: The Prison – School Connection
• Behind the Bastards: The Ballad of Bill Gates, Part 1
• Behind the Bastards: The Ballad of Bill Gates, Part 2