I use terminal on linux less than I use regedit to fix bugs and performance issues “the os for casual people” shouldn’t have. Ever tried switching mouse scroll wheel direction on a japanese trackball? That is an user-experience of all time, while on kde for example it’s a checkbox.

KDE software center servers programs from reliable, safe, trusted sources so you don’t need terminal. Only reason a casual user would need terminal is to get nvidia drivers, which is less work than windows ones considering the aforemoentioned software center automatically updates them without extra useless bloatware and forced sign in to an account, unlike on windows.