Yes, anyone can fork Yearn and have different developers. This means that they can create their own version of the Yearn protocol with different features, rules, and incentives. This could be beneficial to the network as it gives developers the opportunity to experiment with new ideas and potentially create better versions of the protocol. It also allows users to choose which version of the protocol they would like to use, allowing them to customize their experience and find the version that works best for them. Additionally, forking Yearn can help promote decentralization, as it allows for more developers to contribute to the protocol and make the network more resilient.
