"Pocket operator" is just the size of the device they're making. There are lots of them from samplers (like you're seeing) to little synthesizers: https://teenage.engineering/products/po#features
Regardless, these are driving the concept of small, packagable audio devices, which eventually leads to modular synthesizers.
Regardless, these are driving the concept of small, packagable audio devices, which eventually leads to modular synthesizers.