https://hn.algolia.com/?dateRange=all&page=0&prefix=false&so...
https://medium.com/@phila_31297/why-a-land-value-tax-is-inev...
(And reputation and trust matter.)
In other words, I don’t think it’s possible to completely separate an article from its site, and so why I understand the spirit of that rule, I think it’s idealistic and naive, and it doesn’t consider the consequences of promoting a problematic site like this.
The main thing to understand about HN is that we're trying to optimize for intellectual curiosity: https://hn.algolia.com/?dateRange=all&page=0&prefix=true&sor.... I'm not saying that other things aren't valuable, such as the considerations you're raising—they are. But we can't optimize for one thing without foregoing other good things.
We do ban and penalize some sites on HN. We ban the ones that are clearly off topic or spam, and penalize ones that are quite likely to be off topic, or whose popularity/interestingness ratio is too high (which is basically almost all major media sites). But even when a site is banned, when a particularly good article appears there, users can vouch for it and upvote it. All of this follows from what we're trying to optimize for.
You frame this in terms of optimization, but I’m framing this in terms of acknowledging there are negative consequences are of boosting problematic platforms (and perhaps having a discussion in terms of what negative consequences we as a community will accept).
Progress.org appears to be a Democracy Now! type publication that accepts content from different grassroots progressive viewpoints, some fringier than others.