HTML / XML / JS, low-level validity (cross-cutting)MediumInferred
Non-semantic markup (div soup)
What it is
Everything is divs.
Why it matters
Weak structure for a11y and agents; harder comprehension.
How to fix it
Use semantic elements.
Impact
Low-medium; a11y/agents. Inferred.
Evidence
Semantic HTML aids comprehension/agents. Google Search Central, Optimizing your website for generative AI features on Google Search; W3C, Web Content Accessibility Guidelines (WCAG) 2.2
Sources