A large network isn't imperialism. China's international projects certainly have some empire-like qualities; they probably do have imperial aspirations not too different in scope from the US's.

That may provide a framework to help you decide which empire you'd like to live under, if you get to influence the choice. But it's not particularly helpful in understanding the dynamic described in the quote imo, or a refutation of its premise that US-vs-china is not the most effective way to understand these systems.

Anyway though while we're on the subject, it's worth noting that in africa particularly, states & institutions are often choosing entanglement with china as an alternative to engaging with the US in similar ways. Would certainly be worthwhile to get some african opinions on china and US vis-à-vis empire.