Earlier quoted context omitted.
It is more than the spam war...a lot of content is just no longer produced and exposed to the open web (think about how much content goes into tiktok, discord, etc and you will never get that into your search results). Google has less useful content to index, algorithms can't fix that. There is more spam only because that's the only open content that gets added massively. The winners of this battle will be the places…
I can't believe that. There's still so many personal blogs by real people. They just don't show up in the first 3 pages unless you query for them very specifically. Seems most queries result in something like 30% SEO spam sites, 30% quora, 30% reddit, 10% other. Edit: I don't disagree that Discord/Youtube/Other closed gardens have taken open searchable data away, but it's not like there's now no authentic searchable…
So Blogs are more useful when they're aggregated through a site like Reddit, where users have already done the vetting on whether the linked page is valuable. Reddit comments are invaluable to pages by adding additional context. Noting when the content has become dated or inaccurate due to external changes, etc. Sites like Brian Kreb's blog are the exception as the author is well known and respected. But the general blogs? It takes time to earn that community respect.
Then beyond that, how often have you gone on the hunt for something obscure only to run across 3 or more blog pages which look entirely unique, but have the exact same article pasted to them? It isn't that the contents are bad/wrong/inaccurate, but rather who do you trust? How much effort are you going to put in to finding which blog was the original, written by the expert and which ones are bots copying the info?