I tried to click on the link but it ask me immediately to connect my wallet which obviously I decline. I think a legit DEX doesn't work like this but it will let you look around on their site first before you decide if you will try them or not so maybe you are right that this one here is likely a scam and only wants to empty our wallet.

To make the attempt more successful, they use the term free Busd. Never heard, a legit exchange which gives free coins to be honest but they only offer some discounts or coupons for the new users but anyway, if we want to interact with a new decentralized sites, its always better to prepare another disposable wallet and don't use your main wallets, just to be safe.