Yeah, the worry is not so much of the revolution itself disavowing relations with China, but China getting in a strange geopolitical spot between their previously recognised government, the new government, and also Juan Guaido, specially if it comes to a split country situation.

I'm not aware of them taking a strong stance on foreign matters like these over the past 30 years or so, but imagine if India randomly has a revolution and gets split in half. It'd be a bit of a catch 22 for them, but I doubt their foreign policy specialists haven't already thought about this.