I agree with most of it, but I also don't see why all blog posts have to be serious. I had fun researching and writing it, and I don't pretend it's a scientific masterpiece.
My personal website definitely helped me get hired. Here's how.
Whenever I create something, either for work or personal, I add it to a "Featured" section on my website's homepage. Over time, it became such a nice and comprehensive list that I now use it every time when talking about past projects or whenever a "Can we see some examples of your past work or appearances?" comes up.
It has different types of work and is exhaustive enough that whoever asks, can find what they're looking for. I had a lot of positive comments from prospective employers about it.
What started as a mini project for me to collect all the scattered links for myself so that I don't forget or lose anything, became a great asset that keeps on giving.
Here's the link that I send when asked about "examples of your work": https://www.velvetshark.com/#featured
It's an anchor link of my homepage that scrolls straight to the Featured section.
Oh, just to clarify: the "Featured" section is not the only thing that people find interesting. Once they're on the page, they can browse around and find articles that are of interest to them. That helps too.
Since its publication it even got featured in a Spanish textbook, and I get tons of traffic to it all the time. The topic seems very much valid for the last few years, with no sign of change.
The main reason seems to be to look good (or even readable) on mobile, but it seems that it's more of a bandwagon than a proven good strategy.
Source: I'm a human. I wrote it.