I’ve heard rumors or memes about it. Never had to fix grub after Windows update. Maybe it’s the thing of the past and Microsoft simply fixed this behavior.

But when last time i fixed grub - it was when I renamed disks in Windows, which are actually BTRFS Linux partitions, mounted in Windows using WinBTRFS driver. It somehow changed UUIDs in Linux. This is unrelated, but still wanted to tell 😅