I think it's a bit of a shame that this discussion has focused on the tech and (slightly odd) HTML choices here. Those are probably the least interesting parts of any discussion around what a "next gen" blog platform might look like.

Where the author is correct about next-gen blogging (in my opinion anyway) is in the attempt to reduce the friction to publishing a new post. What tech stack you use, whether it's static, what your HTML looks like, are all entirely secondary to whether or not you actually use your blog to build a corpus of content that shows off your opinions, expertise, and insights over time. That's what a blog is. It isn't HTML tags and CSS. It's the content within the tags. For me any next-gen blog tech has to make 3 things trivially easy -

- it needs to be simple to set up and maintain. If my laptop dies and I can't just clone my blog's repo and run a couple of commands to get back to where I was it won't work.

- it needs to be really simple to publish a post. Most blogs use Markdown with either front matter or a specific file path. That's OK but it puts most of the cognitive load on me. I'm sure there's a better way but I don't know what it is. I use 11ty for my blog which is very good, and if I didn't worry about URLs as much as I do it would be could actually work. But I do.

- there's nothing that pushes me to write more. This is the kicker, and no one has ever solved it. I think a blog platform that recommends posts I should write, and that praises me for writing, would drive me to actually write far more than I do. So far the only blog platform I've seen come close is Hashnode, but even that doesn't do it very well.