I’m not so sure about that. With enough dedication and time I think you could target a specific company from HN. Start writing a few good blog posts that would appeal to your audience, only run attack when some attribute is true to that company (i.e. their Corp IP addresses).

You could even combine the two. Post the blog to hacker news, then send phishing email pointing to HN post. That is a trusted link. Then the user will likely click the source link in HN.

Obviously, a lot harder and lower chance of success, but not impossible.