IME microservices solve engineering process problems (i.e. synchronization, enforcement of interface boundaries, build and test scale issues), not technical problems in the product.

I agree, very true when used for purposes as you noted. I guess my point was more about using them as a way solve the underlying problems a large OO system can develop. Microservices enforce you to package data sets for transport, it's very functional if you only take the data and transport into consideration, the mess can still happen within the microservice though.