Chinese EV makers are selling at a loss to Chinese people as well. It's not a cunning strategy to destroy EU industry. It's capitalistic competition driven to absurd levels. In the west it rarely ever happens anymore because governments are in the pockets of the business, but in China, companies really do compete between themselves to the death.
If you want to see a glimpse of this, look on youtube for materials on Chinese EV scooter rental business market.
European people could massively benefit from this Chinese competition. European business can't offer consumer similar deals because it's inefficient due to business-protectionist policies of Western governments. Instead of treating it as an impulse to step up, they provide more protectionism while the European consumers are not getting the value they could making Europe altogether poorer and less technologically advanced than it could be.
I can understand US fearmongering because they are in the process of losing the lead permanently and it shatters their entire national identity. But Europeans singing the same song is just silly. When someone is more advanced than you and offers you superior value for cheap you should buy all you can and learn all you can.