The article lists several good reasons:

Having to compile every time (or at least there not being a convenient wrapper that compiles and runs at once), the boilerplate of having to define a class and main method, exception handling, and most of all having to deal with Maven.

you don't need to deal with Maven if Java standard library(which is huge) is enough for you. Also, not sure why such big resistance against maven.

Other pointers are either opinionated or minor. From another hand, if dev has experience in Java, benefit of not learning some new language/ecosystem is kinda huge.