Liberal idpol only serves the interests of the bourgeois members of the oppressive communities it professes to “help”.

You cannot be “for the gays” if you make the lives of the homeless worse. LGBTQ are significantly over-represented when it comes to experiencing homelessness and facing other associated dangers like sexual abuse, drug abuse etc.

This is a trend present in all aspects of society - social oppression of all kinds (sexual, gender, racial, religious) is worse for the economically downtrodden (which are the vast majority) and this obfuscation of the class dynamic only helps the already most well-off in those communities.

Class reductionism definitely exists and it’s wrong - social problems won’t disappear even if economic inequality does. But ending the class struggle will help 90% of the socially oppressed unlike liberal idpol which only helps the affluent (in any material way).

PS - As I was writing this, I had a realisation of what this looks like in practice. China is a socially conservative country - the media is more heteronormative, patriarchal etc. than the American one (which itself wasn’t anything great a decade ago). But over the past 20ish years, the real wages of people in China has gone up 4-5 times. I’m willing to bet that this has improved the lives of all kinds of minorities in China far more than American idpol has.