What the article's prompt wanted to warn of, has already happened. For a decade at least.
Personal blogs aren't going to disappear, there's right now more of them than ever! And there will be more! But the preponderance of sheer cruft will reduce their percentage.
Discoverability of the content you want has always been the problem, and it still will be.
Yeah it does kind of suck where you have to go to someplace like reddit to get content and people have to "low-key" drop a link to their source blog
> Personal blogs aren't going to disappear, there's right now more of them than ever!
I'm not at all convinced. The personal blog, as it existed in the 2000s/2010s, is essentially dead. There are certainly still some sites which operate on that model - most commonly, in my experience, ones operated by professional authors or artists - but those, too, are increasingly rare.
In fact, I think this is an aspect of a broader trend - having a personal web site is increasingly uncommon. The default nowadays is to post your creations or experiences on social media, and to create communities within hosted services like Reddit or Discord.