Well, one thing certain is that as long as we are online and money is involved, there will always be scammers and fraudsters, Being a big fan of binance smart chain myself, I am happy to read this report of the drop in scam reports on the BSC chain, but permit me to say that this means absolutely nothing.
Scam didn't drop because some of the scammers were busted and sent to jail, but like you said, it only reduced because previous victims, and maybe non victims who have learnt a lesson or two from victims, have learnt to be careful and conscious of where they invest their money and what contract they interact with..
This is not something to start jubilating over, but rather, encourage people to continue to be careful, because, in reality, the scammers are still there in their good numbers, only thing is, people started paying attention to the safety of their funds online.