It’s just the boot messages. It’s configured to be verbose by default on Arch so it will show you the logs even if everything is working fine. There is a way to hide them: https://wiki.archlinux.org/title/Silent_boot

Looks like a unusually verbose initramfs. Mixed with some kernel messages.

If you just wanne hide them change the initramsfs tools config to be less verbose and set quiet kernel parameter in your grub config.

i mean the first 17 lines obviously, that appears when i run every os not just arch