I'm not sure what "it seems like a PR stunt" means in this context. It's a post I wrote for a blog, so in that sense, it is a PR stunt. But the post reflects our experience, so in that sense, it's not an exaggeration. Python people think that nearly everyone is using Python/C++ for deep learning. That's because most of them are researchers, so they are correct from their perspective, but it has limits. There's a lot of DL happening on the JVM in large organizations. That's who we serve.