I think it is less about fame, but more about the gas fee that BSC has. We can see that we are paying a lot for both bitcoin and also ethereum is getting more expensive as well, its quite common, even during the bull run of 2021, bitcoin went up and became very high to send/receive very quickly, but ETH did not stay cheap, it went up a lot as well, even right now without bull run it is higher than BSC at the moment. So scammers know that people would not be willing to send so much to people while also paying that much fee, but they can convince people to pay very little, and then convince a lot of people instead, that would make a lot more profit.