It is not the monorepo which forces trunkbased development it is the fact that you use one build for the monorepo. E.g. you can do trunk based development with

It is not the monorepo which forces trunkbased development it is the fact that you use one build for the monorepo. E.g. you can do trunk based development with multiple repos by forcing everyone to use a common build. You could also use a monorepo and still everyone does their own build consuming libraries via mechanisms such as Mavens Repositories or published npm packages