Speaking only for "micro mobility", it seems useful to distinguish allowing someone to travel within a city from between cities from between continents. Sure, it's mobility, but there are different kinds or degrees of mobility.

Agree, it seems to assume that the unit of mobility is something larger, like a car. When the fundamental unit of human mobility is just that, a human, since they are inherently mobile. We would do better to describe cars as macro mobility than scooters and bikes as micro. Pipe dream, I know.