The problem is that it's an ok concept in theory, but when applied to an individual it's worse than useless. It's extremely divisive and is only becoming more so every year. If we want to talk about average privilege-based differences across different groups - sure, no problem. But no one should feel obligated to support strangers financially or offer emotional support just because they are "more privileged" according to this theory. It's never going to be accurate on an individual level, because we can't know 100% what someone else is going through. People that I would have expected to have perfect lives occasionally reveal major health issues, fears, or financial problems that I would otherwise have never known about. We can't judge individuals from the outside, knowing only the surface level of what happens in their lives. But yeah, I feel that people often ignore this reality when it comes to privilege theory.