I have used Archlinux since 2014 non-stop and never had such problem, sorry. Almost 10 years without problem (besides the switch to Systemd from initd, but not related to GRUB). So on the contrary I would recommend anyone using Arch or a derivative to always update GRUB and all packages in general without paying too much attention.
Do you use the word update in a different way than package update? If not I am sorry but I think you messed up something on your side.
I alternated between using yay and standard pacman commands to update any AUR and non-AUR packages on Artix up and until the last update completely wiped my OS from my SSD.
GRUB on Arch/Artix has been nothing but terrible for me each time I've had to update it, hence my less than stellar opinions on it. Also doesn't help there are better, more modern bootloaders out there.
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According to the page of Artix, it is init based, not systemd. Hence Artix is different from the typical Archlinux distribution which is systemd based. Anyway, good to know init based distro may not be stable. I recommend Manjaro because the OP is a beginner. Never had a problem with Archlinux besides the switch from init to systemd around 2016 (and thr problem I had was because of me not Archlinux, I was busy with work and blindly updated without reading the news). Installed Manjaro on the computer of my wife, friends, and mine I use for work, no issue at all.
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