It's one of the social norms on HackerNews that "low-value" comments like "Love it! Thanks!" and "favorited" are discouraged. Although such comments are polite

It's one of the social norms on HackerNews that "low-value" comments like "Love it! Thanks!" and "favorited" are discouraged. Although such comments are polite to the commenter, they add nothing but noise for all the other readers of the thread. Instead, it seems to be preferred that you simply upvote the comment instead of replying.