I would think that Android applications also don't really benefit from uring anyway since human-facing applications tend to not actually do all that much. Like for networking, they're not trying to process millions of connections/flows at 10s of Gbit/s. They'd be processing 1-20 flows at like a few Mbit/s. The types of processes that might benefit tend to also be relatively controlled (e.g. a database or application server).