ADA is called Ethereum for Korea
Wrong! Cardano is being developed as a replacement for Ethereum. Or, if you prefer, as a better Ethereum -which is not too difficult to be.
Some time ago they launched the first test-net, the KEVM. And now are launching the second one, IELE.
Your article doesn't mention it, but Cardano main net launched in September 2017. Yes, it is older than EOS. And it didn't stop working any single time.