In a similar vein, you might say that to the vast majority of people there is no difference between a screwdriver and a pry bar because most people are content with abusing screwdrivers.
But you can't honestly say that Word and LaTeX really have that big of a difference in intended jobs. It seems to me that they are both in the document production business.
And pry-bars and screwdrivers are both in the "levers that provide mechanical advantage" business.
One can be abused to fill the role of the other, and if you look at them both from 1000 feet and squint then both "for" the same thing, but the reality is that when you actually examine what each is designed to do and in which situations each is used, they really have little to do with each other.
You can't honestly believe that pry-bars and screwdrivers are as similar as LaTeX and Word are. It's a ludicrous argument.
LaTeX and Word are for documents - making documents. How they operate is very different. For example, Word includes it's own editor, LaTeX does not. But they are both used for producing documents.
