The point of the Chinese tariffs is precisely to prevent companies from BYD and Geely from killing American automakers with their cheap, low-quality cars.

(BYD, for example, is notorious for the abysmal quality of its electric busses, which are so bad that they're now effectively banned from consideration by most American public transit agencies. A SoCal agency bought several dozen busses a few years ago; only a single bus survived a year without major problems. Contrast that with their ICE or natural gas counterparts, which last decades.)