In the UK we are seeing a shift to Chinese smart meters too. They also have the same security risks as they have the capacity to turn energy on and off remotely. The government issues warnings but they keep getting installed because they are more competitive.On the Chinese access to US critical infrastructure, in practice they can't access bidding on the energy projects at all for US industrial policy reasons that were in place before the security issues were raised. Be in no doubt whatsoever that the US is not a free market economy. It is in fact deeply protectionist. Especially in some sectors. One can debate whether that is a good thing or not, but it is so.
With respect to the rest of the world, there is Chinese origin kit going in everywhere, both in storage, grid, and generation. Has been for decades. The important clients are well aware of the security issues and many of them have their own precautionary risk management measures in place. My observation (from my very recent HV grid days) is that US kit is simply uncompetitive, and so it often comes to a fairly 'straight' fight between European, LatAm, Chinese, and Indian sourced-kit. (many of which factories I am pretty familiar with).
By the way, what makes you think that Chinese kit is the only stuff that might be at risk of phoning home ?