While there's for sure a use case where what you're describing is 100% appropriate, and in those cases, yes, you need some of that complexity - a good majority of blog-like things on the internet are by and large managed by a single person, and something like Jekyll or even just writing in HTML directly is totally fine.
In fact, this is the exact point the author brought up - of course a lot of this complexity has it's uses - complex systems aren't invented just for the sake of complicating things. But instead of assuming that every single thing you write needs to be written to the most complicated standards you can imagine, we should instead be focused on "What's the simplest way I can deliver this experience right now?".
Really, it's another way of expressing YAGNI, which apparently the development community has completely forgotten in their quest for the latest and greatest.
In fact, this is the exact point the author brought up - of course a lot of this complexity has it's uses - complex systems aren't invented just for the sake of complicating things. But instead of assuming that every single thing you write needs to be written to the most complicated standards you can imagine, we should instead be focused on "What's the simplest way I can deliver this experience right now?".
Really, it's another way of expressing YAGNI, which apparently the development community has completely forgotten in their quest for the latest and greatest.