I don't understand the outraged tone. Asking developers to write actually good software shouldn't be viewed as some kind of crazy imposition. We don't have to write everything like it is running on a spacecraft (which I never claimed), but we should try to make it actually good. For example, if there was a web browser with a security compromise and the makers left it unfixed for a long time, there would be consequences. Saying "well, it's just a browser" wouldn't cut it.

More to the point, what situation can you think of where guessing measurement units is a good idea? In a CNC machine? Maps program? Somewhere else? You seem to have omitted the actual counterargument part from your counterargument, while adding a hearty dash of misplaced outrage.