Why do you need to boost your post on Stacker News?

I have seen Stacker News as a platform where value comes first. If you believe that your post brings value to the SN community, then why should you boost the rankings by paying? The post, because of the content itself, will rank very high soon after it is posted. I have seen that stackers have become very experts at identifying a good valuable post by zapping and engaging with that post.

Why then is it necessary to boost your post by paying?

Am I missing something about this feature?

I understand the boost feature as it is used in other fiat-based social media platforms, where you pay to boost your post with the intention of selling the product you are marketing, even if that product may be useless, because the boosted post can reach many people, which increases the chance of selling the product.

I strongly believe that this is not the case with this feature here on SN. The good content does not need a boost, imo. The bad content will not be zapped even if it is ranked high by paying a boost, always imo.

So what is the role of the boost feature in Stacker News?