I'm reading a lot of personal blogs that don't use JS at all, or at least are still functional with JS blocked. A somewhat surprising amount of websites work without it.

The issue with JS is that while I assume that your use of JS is relatively minimal and you're not malicious, I don't know that, and even if you're not actively malicious, your site might still be compromized by exploited JS vulnerabilities, site hacks or uninformed/negligent choices of third party libraries/plugins/CDNs (NPM is notorious for supply chain attacks and lots of otherwise alright sites include font CDNs or even analytics). I'm not super anal about not using any site that doesn't work without JS, but having it off by default is definitely good practice and sometimes I do decide that I don't want to see a site that badly.