I think it's more likely that Chinese EVs are banned in the US because they would absolutely obliterate the domestic car manufacturing industry.
I'm also curious to hear your source for the subsidies - from what I can see China has spent anywhere from 3x to 5x propping up the domestic EV industry as the US has over the last 15 years. The US had Tesla which almost went bankrupt multiple times despite the subsidies; China has a dozen EV manufacturers, half of whom are on life support now that the government is withdrawing subsidies.
The best source IMO is the commission that came up with the European countervailing duty of 17%.
I'm not trying to attack the impressiveness of the Chinese EV industry, because it's going to be an important part of the future. But saying that Chinese EVs are banned in the US purely because they are too good is incomplete. A big part of why they are banned, and why the US and China have such a frosty relationship, is because Chinese trade tactics are not fair to non-state-backed competitors.
Your point about fairness is interesting because that's a position the US has given up on, especially since 2025. The European EV tariffs of 17/34 percent are fair-ish. The 100% American tariffs never were