Linux users love to blame Windows for "over-writing" the boot loader. Linux doesn't have a special feud with Windows. -Linux has a feud with any OS that expects sane bootloader behavior.

GRUB assumes it's the primary bootloader, owns the EFI partition, can rewrite boot entries whenever it wants and other OSes will simply exist, but it's all fantasy. Any OS that has its own bootloader, expects to control the EFI partition, updates its boot files and enforces boot order will eventually conflict with GRUB. -GRUB and LiGNUt advice are the problem! Windows is just the most common / most noticed by people.

Linux dual‑booting breaks with any OS that has a real bootloader. Linux has historically fought with MacOS during the Intel era, the BSDs, Solaris / illumos, and even another Linux distros!

UEFI was supposed to fix dual‑booting, but made it worse. -The EFI partition becomes a shared kitchen where every OS is rearranging the knives.

Windows gets blamed simply because it's popular. When GRUB breaks BSD, the 0.0001% of people dual‑booting BSD just shrug and reinstall.

The only stable method: separate drives, separate bootloaders. -And it's much less wait to choose the OS through BIOS/UEFI that way. -Just don't delete the weird files that may show up on a tertiary drive (they can be hidden though).