The whole reason that Google exists today is that their PageRank algorithm was a great way to identify good content. At its basics, it worked by counting the number of pages that linked to a certain page. More incoming links meant the page was more useful. It didn't matter how many relevant search terms you stuffed into your page. What matters was votes from other people, expressed in the form of linking to your page.
But, that algorithm failed for 2 reasons. One is that it became cheaper and easier to put up sites that linked to sites you wanted to promote. The other was that people stopped blogging on their own blogs, and stopped creating their own websites, and instead used walled gardens like Facebook, Twitter, Reddit, etc. That meant it was hard to measure links back to a site, and that it was easier to create fake links.
So, now it's a constant war of SEO people vs. Google Search Quality people, and the Google people are losing. Sometimes there are brief victories for Google which result in good Reddit results appearing higher up. Then the SEO people catch up and either pollute Reddit and/or push Reddit links off the first page.
It would all be really depressing even if it weren't for generative AI being used to pollute everything. With LLMs coming in and vomiting their content all over everything, we might be forced back to the bad old days of Yahoo where some individual human curated lists of good things and 99% of content was invisible.
