Because it has most likely has completely swamped their crash log system, and rendered it useless.
The problem is that updating your microcode does not necessarily prevent future crashes, as these CPUs have been permanently degraded. The microcode updates just stop further degradation, but if it’s already happened, it’s already toast.
Windows live-sideloads in new intel microcode updates via Windows\System32\mcupdate_GenuineIntel.dllwhen the BIOS has a version that’s out of date. The problem is it doesn’t persist through reboots and the OS has to sideload it in every time. Additionally, there are some updates that are restricted from sideloading, and IHVs will provide with BIOS updates for first.