IMO for things like static sites, or sites that only have some landing pages and a bit limited interactivity behind a login portal, vanilla HTML/CSS/JS is perfe

IMO for things like static sites, or sites that only have some landing pages and a bit limited interactivity behind a login portal, vanilla HTML/CSS/JS is perfectly fine. The complexity of vanilla gets out of hand when developing web applications (websites that feature menus and tools and widgets and state that the user interacts with - think JIRA or Gmail or Google Docs, etc)