I responded to a similar comment in another thread from a pedagogic perspective, I hope this answer gives some perspective on how we approach this point:

https://news.ycombinator.com/item?id=13186216

Also, Pyret can be used to make things – Pyret's compiler is written in Pyret!

As the language matures, the experience of writing small Pyret programs that grow into real applications will only get more authentic.