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- MacKenzie Scott, ex-wife of Amazon founder Jeff Bezos, has donated billions to charity post-divorce.
- Elon Musk criticized Scott's philanthropy, hinting it's driven by disdain for her ex-husband.
- Last year, Scott sold Amazon shares worth about $10 billion, or about a quarter of her stake.
Amazon founder Jeff Bezos was married to MacKenzie Scott for 25 years.
Scott is 39th on the Bloomberg Billionaires Index, worth $36 billion, and is one of the world's richest women.