I strongly disagree. Publishing advances science the same way communication advances culture. Imagine Einstein didn't published any of his work. How many decades back in technology and quality of life we'd have been now?

It's like any evolutionary beneficial trait gets transferred to all population in one generation instead of many. It saves precious time.

I believe different angles add complexity and fun.

Also, the underlying extension, HypoPG, doesn't seem to collect any statistics on data to influence query planner.

This is oversimplification if not misleading. There are also Bad Guys (who aren't state actors), who usually can't reach for your data. But occasionally they can, when rare Planet Parades like Heartbleed or Meltdown make the news. And they are happy to use this one-in-a-lifetime chance to sell access to your data to everyone else.

That's exactly what anti-encryptionists would want.