That’s a pretty broad sweep (mis)characterization of Rousseau’s work. He was neither a radical egalitarian or hated the democratization of publishing.
He argues for a society where people are both free and equal, but he recognized that some forms of inequality could coexist with freedom, provided they were rooted in merit or necessity, rather than arbitrary privilege. Also, when he talked about the Rights of Man, it wasn’t a rhetorical flourishes, he did mean man.
It’s a mischaracterization too to say he hated the democratization of publishing. His own ideas gained traction precisely because publishing allowed them to reach broader audiences. His critiques of printing and arts weren’t aimed at access itself but at the unintended consequences that came with it.