Again, we're talking about blogging, not business sites or SSR or CMS tooling. Very different needs with very different solutions.
I personally don't think it's that much work, and definitely not complicated, to keep my software up to date. And as a blog all I need to do is cache / throw behind a CDN and I'm golden. Nothing complex going on here. No headaches, no late nights, not even a wink of worry.
Wordpress is used for business sites / ecommerce all over the place. There are whole business built around Wordpress sites.