Startups often prioritize time-to-market for what is effectively a prototype. Startups get a lot of hype. Therefore, frameworks that focus on time to market over refactoring / debugging get a lot of hype. Sometimes those frameworks actually internally put a lot of effort into refactoring / debugging, but when it comes to marketing themselves, they don't.
But some frameworks are marketed more towards mature or large organizations, and they certainly do emphasize refactoring / debugging. The JVM and .NET runtimes are big examples here. Their debugging and operational monitoring capabilities are several classes above most of the competition, and their primary and tool-vendor ecosystems continually push further debugging capabilities as features.