There are some good points around how limited the entropy available here is, but it entirely skips over who the fuck needs hotplug memory in the first place. That is a very niche feature that has no application in the vast majority of devices and should never inform the defaults.
It made it very clear - virtualization builds where memory can be dynamically added and removed by the emulator. I haven't done this with Android but it can be quite useful for running lots of test emulators, they can adapt their memory to the workload to not overwhelm the host.
