Yes, it is a scam, and he did not win $30,000. It is a number in their database and it can be made to $30 million, but you cannot withdraw it. their request to send it to the Binance account is considered confirmation of the scam.
Report the site and the account number to the Binance support team to ban it.
I looked the website up on the net and there were a lot of shaddy reviews. So I tried using a quite trusted scam checker and I got this;
Such tools can be easily manipulated, so do not trust them whether the service is a scam or not. The scammer can buy an old domain, write fake reviews, set up the site well to easily improve its score. They are only useful in lazy cases of fraud that can be detected with minimal effort.