When I boot my system before launching tty, the cachyos logo appears, and I find it unappealing. This logo is displayed both during the boot process and after I power off. How can I disable it?"
Easier way might be just changing the plymouth theme to one that doesn’t have the logo.
https://wiki.archlinux.org/title/Plymouth#Changing_the_theme
Of course, depends what you want. If you want to disable the whole “graphical boot” then as said remove the plymouth hook etc.
The CachyOS logo is actually located in:
/usr/share/plymouth/themes/cachyos/ so you can try to just delete the png from that directory. But it might break the whole thing, so I don’t take responsibility for that 
Yeah, I remember that…but more and more distros seem to be using plymouth now. Maybe most of the issues have been worked out with time?
sudo pacman -Rsn plymouth cachyos-plymouth-theme
…removes from mkinitcpio.conf also or are those edits always manual?