Why does Xcode crash all the time?

Xcode crashes can be frustrating, but there are several tools and techniques discussed at WWDC that can help diagnose and resolve these issues.

Debugging Tools: The session "Run, Break, Inspect: Explore effective debugging in LLDB" provides insights into using LLDB for debugging. It discusses how to use crash logs to understand the state of the program at the time of the crash and how to use backtraces to trace the sequence of function calls leading to the crash. This can be particularly useful if your app crashes due to issues like failing to open a JSON file. You can find more about this in the Crashlogs & starting the program chapter.
Xcode Features: The session "Xcode essentials" covers various features of Xcode that can help streamline the debugging process. For instance, using breakpoints effectively and running tests to catch bugs before they ship. The session also highlights the use of Xcode Cloud for continuous integration, which can help offload testing workloads and ensure your app is stable before distribution. More details can be found in the Debugging chapter.
Performance Diagnostics: The session "What’s new in Xcode 16" introduces new diagnostic tools in Xcode, such as the thread performance checker and instruments for analyzing app performance. These tools can help identify issues like excessive disk writes or slow app launches, which might contribute to crashes. The What's new in Instruments chapter provides more information on using these tools.

By leveraging these tools and techniques, you can better understand why Xcode might be crashing and take steps to resolve the underlying issues.