If someone says "I made a thing," and a reply says "that's cool but I would rather have something slightly different that matches my technology of choice," I can't see any positive outcomes for anybody. For the submitter or author, the message is "what you made isn't good enough." For a reader without context, it purely muddies the waters because it adds noise without teaching them anything. For a reader with context, it's not new. I don't understand what the value could be for anyone.

Imagine someone submits an article about a MySQL ORM for Go, and the top comment is "now one in Ruby, please." How does that help anyone? It only diminishes the efforts of the submitter and ignores the complexity of writing an ORM in the first place.

If you want to start an effort to do something similar, then talk about doing that. If you want to tell people about another cool technology, do that. If you think the project under discussion could be extended to support something you want, pitch the value. If you want to make a feature request, you can definitely do that with more kindness for the creator.

I know from experience how annoying it is when random people come at you with tone critiques to your hastily written HN comments, so please take this as intended, just an attempt at building empathy.