There are some rich people who are nice, relatively reasonable people, but there are no rich progressives. Just like there are no slave-owning abolitionists. There may have been slave owners who treated their slaves humanely, but they were still slave-owners.
The essential ideological property of progressivism is a rough equality of power. Not some paranoid anti-communist straw man of the absence of individual differences, but rather the incredible differentials of power which "free" market capitalism creates by virtue of lies, bullshit and outright coercion. Power corrupts, and rights have meaning only between equals. We see in every one of the 20th century productive socialist economies, especially in Scandinavia, that the elimination of poverty entails the elimination of great wealth. No homeless means no millionaires.
(Which is why I feel absolutely no white liberal guilt at my essentially lower-middle-class lifestyle. It's a lifestyle I know that almost everyone can live; the lifestyle that most 20th-century European socialist countries maintained for the vast majority of their populations.)
The reasons that Stuff White People Like is so screamingly funny is that it's not really about white people per se, it's about the hypocrisy and double-think that rich Western "liberals" (who mostly happen to be white) have to employ to keep their wealth and maintain the illusion that they're trying to help the people their wealth has forced into poverty (who are mostly not white).
What's also screamingly funny is that no small few "advocates" for minorities and the oppressed are not working against an economic system that has to find someone to oppress, but rather trying to make sure that admission to the elite club of the ultra-wealthy is gender- and race-neutral.