Simply because the lack of Chinese bag holders to buy and hold our bags.
Just because the current Chinese exchanges are forced to shut down, doesn't mean Chinese people won't be able to buy and sell Bitcoin through other ways.

every day 2k of bitcoin created, who is going to buy them?
No one initially. Just because miners are minting 1800BTC per day on average, it doesn't mean they will be sold automatically - miners are known to keep holding on to their coins after minting. If they end up cashing out a certain part of their mintings, they do that gradually to not drive the price down too much, because at the end of the day, they don't want to ruin their own game.
huge amount of bitcoins gonna be sold by Chinese, no one can buy them and hold the price above $2k, in fact, not even $1k.
The western market should disconnect itself from China, which is something that should have been happened a long while ago already. Everything that happens in China, is their problem, not ours. If they end up dumping their coins on the western markets, then so be it - only an utter idiot will entirely cash out something with the potential of reaching insane levels in the far future.