You’d think someone who’s announced she’s giving away $17 billion to charity would be a hero. Instead, Mackenzie Bezos and others like her have come under fire for donating half their wealth to philanthropic causes.

The announcement makes Bezos one of 204 billionaires to commit to the Giving Pledge, a campaign created by Bill and Melinda Gates and Warren Buffett in 2010 to encourage wealthy people to contribute a majority of their wealth to charitable efforts.