It's fascinating reading a post like this because I feel exactly the same from the opposite perspective.

I feel bad for people trying to write in other languages and manually re-inventing dozens of features the JVM ecosystem just gives you for free. In many ways, the whole container-push has been essentially people trying to achieve what the JVM already gave you (isolation, cross platform, etc etc). I still don't see anything equivalent that doesn't impose huge burdens of complexity (which java does have but it's a known quantity with two decades of maturity).