Day by day, HN is becoming reddit. Jokes, shenanigans and these types of comments are plentiful on the internet. Please leave HN for serious discussions.
https://hn.algolia.com/?query=thank%20you%20hn&sort=byPo...
https://hn.algolia.com/?query=thanks%20hn&sort=byPopular...
It's true that there's too much callousness on this site. But humans are like that on the internet everywhere. There's also a lot of mutual support and humane feeling here, to a rare degree in so large a community. This matters to me personally because we pour our own hearts into trying to get HN to be that way and to stay that way.
The consensus seems to be against these types of comments, as they are more often than not at the bottom of the post.