Sure, they believed that the bourgeois value system functioned to maintain the bourgeois status quo (isn't that true?)
Isn't there only one status quo, and don't all mainstream value systems function to maintain it? For better or worse.
It is true that there is (at most) one status quo at a time. Further, I would expect the dominant morality of a particular moment to support the status quo, but that doesn't imply that only one moral system is believed at any particular time.
I don't know what you mean by asserting that there is only one status quo - it seems false. The status quo in France in 1788 wasn't the same as the status quo in France in 1791.
Further, there's nothing inherent in the concept of a morality that requires it agree that the current state of affairs is best. Mencius Moldbug has a morality, and he thinks the way western nations run their affairs is filled with nonsense.
From Being a Realist (even if you believe in God):
My mother, who doesn't call herself a theist (I think she's agnostic), doesn't even accept realism. She doesn't even agree with this:
That's little more than tautologies here. Yet it elicited an impression of being forced to believe. I know because she told me about the totalitarian dangers from such narrow thinking.
I'm happy to have finally found the root cause of our ongoing disagreement, but now, how can I deal with that? It looks pretty hopeless, but just in case, does someone have a suggestion, or should I just leave it at that? (My ego doesn't like it, but giving up is an option.)
Now I'm relieved to know that in near mode, she's a complete realist. This craziness only shows up in far mode.