Europe is locking itself in to US LNG

I don't understand economics that much or how money works. But is the following possible in a clandestine manner?

US and EU provide each other money through swaplines by printing freshly created respective currencies and exchanging them.

Then EU can use those dollars to buy US LNG.

Is this a far fetched idea? This is like undercover QE.

why would the US gov want euros?

Something like this

https://x.com/FedGuy12/status/1970010162741346356

South Korea is suggesting that their $350b investment in the U.S. is so large it requires an FX swap line, which in turn implies that the Fed would be the ultimate financier of the investment.