Ask HN: Anyone ever deliberately left out code to thwart scrapers?

A function called out in your code, but never defined. A dependency not included. A comment that says "email me for the missing piece" in the readme? Bots scrape GitHub 24/7, vacuuming up people's work with no acknowledgment - not like it used to be where people would interact - there was a human element.

So wondering, has anyone done this? Is it a coherent stance or just a pointless gesture?