The writer here makes an error in assuming that what he terms "luxury beliefs" are invented by people with more money or influence. Ideas like police abolition absolutely have their roots in working class movements in places like the South Side of Chicago and the Bronx.

I think a more interesting analysis would have compared people whose lives are at stake in political fights vs. those who are well-off enough that they can participate as a sort of hobby (or, yes, as a way of accumulating cultural capital). For the latter group, their beliefs and their ability to participate in political debates are indeed a luxury. But I don't think this divide would mirror the US culture war as closely as the author seems to think it would.