I can't completely agree with that. I spent some time with 4.0 with the intention of building on it but found too many broken Gems to be productive with it. If

I can't completely agree with that. I spent some time with 4.0 with the intention of building on it but found too many broken Gems to be productive with it. If you don't intend to use many (or any) third-party Gems it's less of a problem.