I don't think a lot of people go and read all the stories about a topic, then decide that although the TechCrunch story isn't the best one, they'll submit that

I don't think a lot of people go and read all the stories about a topic, then decide that although the TechCrunch story isn't the best one, they'll submit that because bias. Rather, a lot of people subscribe to TechCrunch and when they see something interesting they submit it without researching into other possible sources. HN prefers primary sources. TC publishes both primary reporting and rewrites. If you see a HN story that's a rewrite (TC or not), please add a comment with a link to a better source and a sentence about why it's better. The mods can change the main link if the new source is significantly better.