Framework choice follows the product
Next.js is useful when a project benefits from React, flexible rendering and an application-ready architecture. Simpler requirements may be served better by a simpler stack.
Performance needs measurement
Image strategy, fonts, JavaScript, caching and rendering decisions are tested against actual pages rather than assumed from the framework name.
Search needs accessible output
Important content and links are rendered clearly, with canonical URLs, metadata, sitemap support and structured data where it helps describe the page.