> Bloated file sizes due to javascript libraries for lazy loading data.

Use of JS, including the NPM-backed bloat you see in libraries used on the modern web, is orthogonal to whether a site is on a static host or not—which is what "static website" actually refers to.

For examples, see: a bunch (most?) of the stuff hosted on GitHub Pages.

> Nowadays every page you see is always using fancy technologies and "modern" UI that looks like unicorn barf.

... says the person responsible for authoring/publishing a post exhibiting some of the worst decisions I've seen for styling a Web page all week.