That probably needs to be qualified with "Oracle JVM Java applications" because I've had many hours of running Minecraft on macOS 14.4 under Zulu's JVM (a pre-14.4 release which means it doesn't have any workarounds) without any issues.
Almost all Java builds including Zulu are made from the same OpenJDK code base. The fact that you didn't experience crashes does not tell anything. May be you were lucky or this particular bug was not manifesting for this particular application.
Only Java is unstable because it’s not following Apple’s rules. Everything else, including the apps that follow the rules, are stable. That’s how it’s always been for the Apple ecosystem.
Java is not breaking any rules. macOS has memory management provisions for JITs and virtual machines just like every other OS. SIGSEGV has been part of Unix for decades and works perfectly fine on other OSes. And still works "most of the time" on macOS. Apple broke something here, and I'm sure they will fix it pretty soon.
That probably needs to be qualified with "Oracle JVM Java applications" because I've had many hours of running Minecraft on macOS 14.4 under Zulu's JVM (a pre-14.4 release which means it doesn't have any workarounds) without any issues.