Is there a reason, why you didn't start with mobile first?
Hacker News predates reasonable web browsers on phones by a few years.
Seriously? HN is primarily for developers. We use desktops heavily for development.
There are good android apps for HN
Are there? I've tried HN and HNdroid, and neither allow you to leave comments. HN in particular fails to load comment pages where you have a comment.
Hacker News 2 allowed you to leave comments; unfortunately, the author disabled them in the last version due to some HN change, but I'm hopeful they'll be re-enabled soon.