It's not about fans to a blockchain-based. It's because many don't have choice about the so called defying ( if that actually exist ). Uniswap, Sushiswap are the home base of Defi projects because of they are fully decentralized. Their activities are responsible for the actions in gas fee and hence they don't have choive as most of this hype project are mainly built on Ethereum.

Now that BSc has scale up the main game Ethereum has been trying to achieve since last months. I still think more development is needed but if BSc proves to be better, many will leave Ethereum for Binance chain.