For the record, I have been running Arch Linux many years ago as well for desktop, and the only issue I ran into was related to not having updated archlinux-keyring before downloading other updates. This is most likely solved though, because it is no longer an issue. I see sometimes that there is a new version of it and it seems to work without updating it first, but to be honest, I always update archlinux-keyring first as a "just in case". Old habit.