I think what he means is that you can build your blog with nothing more than your templated HTML - no frontend JS needed. You still can make your page look and feel nice, but without resorting to doing everything on the client.
Exactly - two thumbs up!
You can, yes. Moreover, it makes more sense in serverless world to a certain degree.
One might even have a successful commercial html-only project. But I am confident enough to claim it as an exception rather than a rule.
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