Is Client-First semantically wrong?

Is the Finsweet Client-First Framework semantically wrong? In nearly all the Finsweet templates, the hero section is set to the “Header” tag. But outside the Webflow community (among full-stack developers, for example), they use the “Header” tag for the nav, just like in this ChatGPT prompt

hi @m7md20091 the answer is hidden in documentation how HTML <header> tag should be used eg. to have an impact on SEO.