The Chinese government doesn't want to have to deal with routing the world's email spam through their domestic servers. Nevermind the nightmare of latency going round trip from a terminal in Sao Paulo to a data center in Beijing, just so some mid-level bureaucrat can know the porn habits of Brazil.

I would say the bigger threat of Chinese hardware is an end to the effective technology embargo the US sanctions regime has imposed on the Global South. Far scarier to Americans than a Chinese bureaucrat with access to the Amazon web store history is a Cuban Communist with a standard of living that outpaces their Miami peers.