Technical is the more perfect Simple Line.
Technical is good for anything that needs to be rendered geometrically perfect.
Computer-related subjects, science, technology, math, geometry and other abstract subjects need this style. Common to all these illustrations is that the lines are precise and seldom organic.
And of course, computer programs and their great drawing tools make it all so easy. Still time-consuming maybe, but the alternative is too ghastly to think about.
And for an example that counteracts everything said here… there’s this post.