Am I misunderstanding something, or is the routing example suggesting I put an entire HTML webpage inside a JS string? This doesn't look like a reasonable alter

Am I misunderstanding something, or is the routing example suggesting I put an entire HTML webpage inside a JS string? This doesn't look like a reasonable alternative to React with JSX. https://plainvanillaweb.com/pages/applications.html https://plainvanillaweb.com/pages/applications.html Also, "the hash-based routing approach is effectively invisible to search engines."