But I think is what they are doing on RSK Smart Bitcoin that they have smart contract on top of the network?
I'm not very familiar o the project but there were chats that I've read about Defi on it. Not sure how true but I hope there will be less effect on its price if there will be something like Defi on BTC.
Based on what the author was saying, building a Bitcoin DeFi on Ethereum just as some people here have said will automatically make the project a second class, because it’s already being backed by Ethereum and not Bitcoin, the network fees and everything that has to do with the DeFi would be eth. With that said, he added that a better option, instead of Ethereum which is fatal flaw, would be Bitcoin layer 2 which is providing better tools to create DeFi on Bitcoin native environment.
Do you mean the WBTC?