But... if you're non-technical, then considering you may encounter a situation where you need to use the keys (e.g. "press ctrl+alt+delete"), choosing a keyboard where it's more complicated to press those keys seems a weird choice.

I think the people who opt for small keyboards are more likely to be keyboard-enthusiastic, and go for e.g. vim or emacs as their main text editors.

I disagree. A numpad can be nice to have if you have to input lots of numbers, or use a calculator app. I often use the END-key when editing text to jump to the end of a line, similarly for POS1. So IMO this has not so much to do with being technical or not.