The auto industry does not have a choice. They need batteries and will not get them from European suppliers, as they cannot deliver the same cost and quality AND they need the growing wealthy population there to keep their bottom line up.

Maybe 5-10 years down the line there will be enough forcing of Chinese battery suppliers to open factories in Europe to reverse this, but it is not going to happen soon. Maybe the tarrifs will speed this up, maybe not.

Bluetooth and the 2.4 GHz ISM band is not electricity and is highly resilient to moderate noise over short distances. Problems are usually caused by hardware related issues.