Yes any technical subreddit averages out to the average HN thread. In some specialized subreddits like /r/AskHistorians the quality far exceeds HN because you're required to know what you're talking about to even state an opinion.
Here's an illustrative example: the thread for "LLMs aren't world models (https://yosefk.com/blog/llms-arent-world-models.html)"
HN: https://news.ycombinator.com/item?id=44854518
/r/programming: https://old.reddit.com/r/programming/comments/1mnc9qf/llms_a...
I don't see a qualitative distinction between HN and "literally a cesspool of humanity" here.
I won't belabor the point because I know it's futile and diverging far from the topic.