Maybe not bad, definitely has few very cool features (rhymes impressed me), but I'm struggling to imagine when I'd actually need to use it. Sometimes I do need some random natural language text for testing, but then I usually just copy something from wikipedia or some book and it's guaranteed to be more random and more natural than anything I'd generate myself. No, hardly I'll ever need to generate natural-language sentences using this. Generating something more primitive, like random IPs? Well, if I need few I hardly would struggle to remember syntax (or even name) of some tool I downloaded long time ago and never used since, or I need many structured data of some sort and then it's almost certain that using this DSL wouldn't be enough or simply practical, and I'd end up using Python (which already has libraries for generating random data anyway).

Edit: to guys who are actively minusing this comment, I would be grateful if somebody could actually suggest any use case.