I can't even find coinbase in their system, but I found other big exchanges e.g. binance.us, kraken, gemini etc, is Coinbase illegal?

The good thing that I'm not an American, so I wouldn't worry about this news, but obviously this would make other countries to tightening their regulations and force people to use their own local exchanges.

Very unlikely
There are many users here that wouldn't sacrifice their security and privacy for anything.
KYC especially in centralized exchange beats the need for Bitcoin
If we all going to do KYC, why still use something that promotes freedom and privacy.
Coinbase is not registered in their SEC and am surprised Binance was even listed there.
Hopefully all centralized exchanges (which are becoming banks due to people holding their money there) go down in the wake of decentralized ones that are finally seeing the light of day.
We suppose to use it Peer-to-Peer, not Peer-to-CEX-to-Peer.
I doubt it would anytime soon. The government are advocating for KYC with the reason to prevent money laundering
Or terrorism funding.
It would affect the market Big time if CEX falls
It would be like breaking up from a toxic relationship
Hurts in the time period but the best in the long run.
But I would be Happy if decentralized platform becomes mainstay.
I find it quite ironic that USA is trying to put CZ in jail and then say that his exchange is safe, and non-KYC exchanges aren't.
They playing the card of business as a legal entity
Binance and CZ are separate entities that would be their argument.
About Non KYC not been safe
The government would never believe something they have no control or access to their data as been safe.
Is like to them the citizens are not ready to be truly free.