Yeah, monoculture is bad, but also having to constantly joggle between different engines when developing for web is not all that great either. So this is also a

Yeah, monoculture is bad, but also having to constantly joggle between different engines when developing for web is not all that great either. So this is also a step toward a dream of having fully standardized set of web browsers' features. It means less polyfills, less compromises, more modern js and css and ultimately better and leaner sites and web apps experience for users.