This. Even for basic websites you benefit from some form of templating/components for example to get the nav & footer on each page.
I think otherwise. I.e.: blog shouldn't be web app just because it's content management is.
If you use a CMS you have already a templating situation and dynamic content, using a framework, or jamstack like situation is not that different, depending on the specifics it might produce faster results.
I can say with confidence that unless I royally screw something up in my component lifecycles or render loops, everything is just as snappy as ever. No latency. No lag. Just a zippy fast web app with URL/route changes that fly, fetched data populating quickly, and interactions feeling wonderful -- and that's because said apps I'm developing _aren't_ using any heavy tracking libraries.
People are too quick to blame slow performance on modern view libraries, and even likelier: they've never used them before.
Have you checked this is the reason? not slow network? and not ads/analytics and blocking assets? That's not exclusive to frameworks btw, and probably less likely as most optimize these things for you.
The website that is linked originally has a bunch of blocking assets.. lighthouse score is not amazing either.
Just like the original article, you might want to test your assumptions a bit more.