That's leftist infighting though, is it not? I'm talking about genuine nationalist revolts. I'm aware there's orchestrated infighting, but I'm talking about, say, a rump Chinese monarchy around, say, Taiping (with a slight hold on Beijing) to contrast the republic in Taiwan.It's mentioned more than once in the TL that the Collectivist Internationale is not fully centralized and is prone to infighting, albeit heavily implied to be by design for the Party's plans. Not to mention how the expansion of the Internationale wasn't instantaneous.
In addition, something like Wahhabism or more fundamentalist Islam kinda died with the Terror, and while Oman might have had a potential claim to establishing a Caliphate, the Alnahdists had other ideas.