It's not that simple; explaining one reason why something would not work means re-examing many of the underlying assumptions and not many like to go deeper than that one problem at hand in isolation. The "ok, how would you do it" forces thinking about underlying issues, because the solution you propose has to account for factors you otherwise wouldn't think of.
It is not a new problem either; this video is 9 years old already: https://www.youtube.com/watch?v=ZTdUmlGxVo0. It is almost one hour long, but well worth to watch to see the two different approaches to clash.
It is not a new problem either; this video is 9 years old already: https://www.youtube.com/watch?v=ZTdUmlGxVo0. It is almost one hour long, but well worth to watch to see the two different approaches to clash.