Answer
Too many responsibilities cause unpredictable re-renders, poor testability, and tight coupling. File size is not the real issue.
Quick Answer
Splitting by responsibility keeps components focused and small. A component doing many things re-renders when any of those things change — unnecessarily. Smaller, focused components only re-render when their specific concern changes. They're easier to memoize, test, and reuse. File size is a consequence of responsibility, not a reason to split.
S
SugharaIQ Editorial Team
Verified Answer
This answer has been peer-reviewed by industry experts holding senior engineering roles to ensure technical accuracy and relevance for modern interview standards.
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Source: SugharaIQ