It has no query engine, instead the platform offers powerful primitives to partition and distribute both data and compute, effectively destructuring transactions and query engine into microbatch and stream topologies.
I think the real value of such platform is in how it can replace tons of microservices and nosql databases into a single platform with a coherent model. Replacing 1M LOC across 100 services and databases by one cluster with 10000 LOC is an operational dream come true.
Also I expect LLMs limitations to force us to resolve ourselves the operational complexity of IT, as I can't imagine letting LLMs multiply the number of services and databases like PRs on github. Platforms like Rama provide the necessary constraints to channel LLM output into a coherent whole easy to operate and observe.