I think you just captured the essence of why microservices are so popular. Dynamic languages just don't scale to large codebases, so there's enormous pressure to decompose software into chunks that can be digested more easily.

Some amount of this is good, but it often forces the chunk boundaries to be smaller than the "natural" clumping of data and behavior in a distributed system. IMHO this is a much worse problem than a messy monolith; you can refactor a monolithic codebase to be more modular, but refactoring hundreds of microservices is a herculean endeavor.

My problem with microservices is the word micro.