These binary distinctions (mostly) don't work for people in the real world. It's not a book or movie where people are clearly either good or bad, in reality all people are a mix of both.
He's still doing his work on philanthropy which is IMO a good thing.
The one counterexample to my point that I'd think of is Hitler. And _technically_ he did do good things for Germany as well, the bad just overwhelmingly outshines the good in this case.
You mean his philanthropy work that influences where public money goes, into companies like Monsanto and Cargill which his foundation profits from?
He uses philanthropy to force his ideology on everyone and his ideology doesn't work. His philanthropy makes things worse not better.
At some point it stops being a philanthropy when it makes lives of people he tries to "help" worse. Like his actions have a ulterior motives...