Seriously, not every mention of race is racist. Saying this is racism cheapens the whole idea of racism and hurts whatever it is you believe you're fighting for by "calling it out". You're effectively putting a guy who mentioned someone's (hypothetical, as it's not even in reference to a real person) skin color in the same category as people who burn crosses, or deny people of color job opportunities based solely on race, or lynch children.

To put it in terms appropriate for HN you're adding an extremely small outlier to the data set of "racists" and thus bringing down the entire average.

I think he simply wanted to rely on a common stereotype to refer to ultra-wealthy people who live completely different lives and are generally out of touch with reality.

Well, yeah. Can you name any other race-gender combination aside from "white male" where negative stereotypes are tossed around as casually as this, by people who purport to be enlightened and fair-minded?

The author never said nor implied that white males are the only rich people in society. Whether or not money inherently makes you out of touch with the rest of society, though, I'll leave for another day...

If you are (which I don't think you are), I think you can answer your own question.

If not, then I don't think the comparison stands: you're implying a wealthy individual ("a Hip-Hop mogul") is representative of a whole race when his circumstances are (for lack of better wording) merely an exception to the rule, whereas "rich white men" is, objectively, a non-misleading statement, as white men are statistically the wealthiest demographic.

Of course, I could have read to deep into your question entirely - I'm not an expert in this field. Thank you for the thought provoking discussion regardless, though.

Would you consider the cliche stereotype "black woman on welfare" to be racist?

There is insufficient evidence to support that claim.