The first thing that comes to my mind is that there are different axes that you may need to scale against. Microservices are a common way to scale when you’re trying to increase the number of teams working on a project. Dividing across a service api allows different teams to use different technology and with different release schedules.
I don't necessarily disagree, but I believe that you have to be very careful about the boundaries between your services. In my experience, it's pretty difficult to separate an API into services arbitrarily before you've built a working system - at least for anything that has more than a trivial amount of complexity. If there's a good formula or rule of thumb for this problem, I'd like to know what it is.
I agree. From my perspective, microservices shouldn’t be a starting point. They should be something you carve out of a larger application as the need arises.