Comment by trailbase

> I guess I just have to accept that the term has lost it's meaning at this point and can be used for whatever whoever wants to use it for

It's maybe more like you point out: realtime in the OS context vs realtime in an event processing context. The latter is certainly not defined as strictly and often just means push-based. It has been a popular moniker, e.g. in kafka-land, for a while. I'm not sure it intrinsically takes away from the OS context - it doesn't need to be a deep dish pizza situation.