TUIs are slower to execute things with than GUI 99% of the time, and always less intuitive.
This is, as you mentioned, true for “less technically inclined” people. But that doesn’t make TUIs “dumb” as those more used to terminals may find it faster and more convenient.
In the era of GUIs, it is easy to forget about terminals, but they are not an “old” thing. They are a tool, used every day by millions of people, for countless different purposes.
Many times, it is also the most straightforward interface between you and your computer.
This is, as you mentioned, true for “less technically inclined” people. But that doesn’t make TUIs “dumb” as those more used to terminals may find it faster and more convenient.
In the era of GUIs, it is easy to forget about terminals, but they are not an “old” thing. They are a tool, used every day by millions of people, for countless different purposes.
Many times, it is also the most straightforward interface between you and your computer.