The blog talks about users who hold bitcoins on their accounts, those users WILL receive their Bitcoin Cash. But it does not state anything about users who will deposit bitcoins after the fork.
Of course you'll get NOTHING after the fork when you deposit BTC,isn't it logical

Yes of course, yet there still might be a misunderstanding for some people so it is good to state such facts. So if you have your bitcoins offline and you want to trade on Kraken after the fork you will first need to import your private key or seed into Electrum, claim both Bitcoin and Bitcoin Cash and the deposit into Kraken.