pron has been posting about programming languages for years and years, here, in public, for all to see. I guess reading them makes it personal? (We don’t know each other)

The usual persona is the hard-nosed pragmatist[1] who thinks language choice doesn’t matter and that PL preference is mostly about “programmer enjoyment”.

[1] https://news.ycombinator.com/item?id=16889706

Edit: The original claim might have been skewed. Due to occupation the PL discussions often end up being about Java related things, and the JVM language which is criticized has often been Scala specifically. Here he recommends Kotlin over Scala (not Java): https://news.ycombinator.com/item?id=9948798