In my experience, there’s also a poverty component. Some families may have to move into a shelter in a different school district or even state. Within that you can stay at a shelter for a short and long time. Education is also not usually a focus of the family, or theres not enough time. So you have a situation where you are constantly moving places and schools, and your family doesn’t take any time to teach reading outside of school for whatever reason.
I’ve had no problems, as long as I’ve updated the keyring first
sudo pacman-key —refresh-keys. I’ve probably gone a few times not upgrading my system for a while and I had minimal problems.