People aren't good at detecting AI generated/edited comments, so unsure how effective this policy will be. Though I guess there are still some obvious signs of AI speak like emdashes and sycophantic (it's not X, it's Y!) speech.
Bit of a shameless plug but I wrote a HN AI comment detector game[0] with AI and most of my friends and fellow HN users who tried it out couldn't detect them.
psychosis.hn is a daily game. Every day we fetch three stories from a previous front page of HN, each with 5-7 AI comments threaded into the discussion. They have personas, reply to real people, and sometimes have real comments reparented underneath them.
I think this comes off a bit too strong (as well as the replies to this to be fair)
The example isn't quite accurate. If a friend bought you lunch, the social norm of reciprocity would incline you towards buying them lunch in the future (i.e part of your paycheck)
Free open source software is a public good. While there is no obligation to give back, giving back helps that public good become more useful to other people (including your future self). I'm against making contribution an obligation, but I'm not against light social pressure upon philanthropists who have the means (which is what the parent comment was doing).