Eh, debating what's a "blog" and what's a "personal website" is splitting hairs.
Most "blogs" nowadays don't have the features you're talking about, because very few people actually care about them anymore. If you really want comments, you can add them via something like Disqus, but so few people are using RSS today that it's not worth bothering with.
The point I’m making is that we should choose tech that is relevant to the job in hand, not just because it’s the latest cool thing.
When I first started doing web stuff, ColdFusion, Perl, Flash and WAP were The Big Things at the time.
Not so much now.
It may seem like no-one can build anything on the web without having js through and through the stack - but actually you can, and sometimes you should. Even JavaScript will probably one day be relegated to the dustbin of a good idea we all once had…
Btw - this might be the wrong forum to diss RSS ;-)
So: sure, if your cdn and static files can do all of those then yeh. But it can’t.