If that is necessary depends on your BIOS/MoBo. I did have to on mine. But the effort for a normal CachyOS install is t really like 5 minutes: boot into live iso, enter 'cachy-chroot' or whatever the command is, follow instructions on screen. Then just reinstall grub and/or kernel (which regenerates initramfs). There's a wiki entry and pinned posts in discord for this whole thing. Ask in discord if you get stuck, they are incredibly responsive and helpful.

Once you've done it, you'll notice it's really no big deal. Btw. "Losing" your Linux install is very hard. It's not as fragile as Windows. You can bork things, but they can usually be un-borked as well. The only real way is fully deleting partitions or their contents, which you can't just do accidentally.

Especially just moving it to a new host can't break it, you just need to get it to boot. Once you know how, it's like 5 minutes. You can take the drive from a 20 year old PC, pop it into a modern system and it'll work fine (assuming the system is semi-updated). Windows has a hard time moving to a different MoBo or platform. Linux doesn't care. Drivers aren't 'installed' like they are in Windows. They are just in the kernel available to be used. Almost everything is detected fresh on every boot, making this incredibly robust. As I said, you might just have to fiddle a bit to get it to boot, once it does, it'll just work fine.