I like the GUI. I previously installed pamac-all and it caused issues with updating via Garuda Rani. I did not intend to update apps with pamac, just install them. I went with -all because, well, it offers more.
(I ᴊᴜsᴛ ᴅɪᴅ ᴀ ᴘᴀᴄɴᴇᴡ ᴄᴏɴғ ᴄᴏɴғʟɪᴄᴛ ᴍᴇʀɢᴇ ᴀɴᴅ I ʜᴏᴘᴇ ɪᴛ ᴡᴇɴᴛ ᴡᴇʟʟ…)
Before you recommend I use pacman exclusively, please understand that I am dyslexic. Not severely, but it still effects me. For various reasons, pamac helps a lot to counter my dyslexia. Particularly how spaced out the padding is and especially the icons.
Search returns these recent threads regarding pamac usage:
Read those threads and you might realize that pamac is not recommended by the Garuda team. If you really need a GUI, then Octopi or Bauh would be better alternatives than pamac.