It's a complete scam, good thing you didn't connect your wallet to these sites, they would empty your whole wallet. It generates these tokens specifically on the bsc network because transactions are cheap. If there are coins in my wallet that I have not purchased or applied for any airdrop, I do not touch them. It is necessary to be careful, scammers always find different methods.
I'm not quite sure about the wallet connect thingy. I didn't proceed to check it myself to be honest, I'd rather not test it, however, I've read that the main catch happens when you try to swap the fake tokens. The pools often have extremely low liquidity, thus, you're unable to conduct the trade, but your gas fees are deducted normally (which in many instances are high).