Best practice for creating Datastreams per development environment

What's the best practice now for creating Datastreams in relation to the development environment (i.e. development, staging, production)?

I remember that when Datastreams were first introduced, creating a single datastream would result in 3 datastreams, 1 for each development environment. All 3 datastreams retained the same datastream ID, though the development and staging ones had ":dev" and ":stage" appended to their IDs respectively.

But now, when I create a datastream, I end up with just 1 datastream. Does this mean the best practice now is to create separate datastreams -- that end up with different datastream IDs -- for each development environment?