That sounds like good old Waterfall to me. Or in its current form SAFE. 90% communication 10% code. And something like that is basically what it takes when you have hundreds or thousands of people working on the same product.

Making sure that everyone understands how to use your part (and that the overall architecture is at least coherent), in a big project, is actually more important than if that part is of high quality. And since communication is more important it's the seniors responsibility.

Sometimes I really want to go back to the junior years it was in general more fun back then. But getting to decide the architecture does have its charms.