Yeah this poster is conflating market forces and demand with massive foreign government subsidies that create an unfair advantage and puts the domestic economy at risk.
Let me put it this way. If a European company spends £100 to make a widget and they can sell that widget for £120, then they make a profit. Now a Chinese state owned company can make that same widget for £90 and sell it for £110 to undercut the European company. The European company still has some margin to compete.
But if the Chinese state subsidises the Chinese widget maker by £30 per widget and they start selling them for £70, they still make a profit. Obviously the European company cannot compete and goes of business.
This only works short term to help gain market share, but is unsustainable longer term due to raising debts. It’s one of the reasons the Chinese economy is in decline.
If that European widget maker generates 25% of the local economy with jobs and wages, then it drives economic growth and stability for your region. So that European widget maker going out of business is an objectively terrible idea.
So just looking at your wallet is blinkered and short sighted for the local economy and for society as a whole. We did this decades ago when successive UK governments pushed to make the UK a service economy and decimated the manufacturing sector.
The EU obviously aren’t that short sighted and are protecting their and their populations interests.