I don't think the fact that Knuth wrote it and gave it away has anything to do with the question I was asking. If anything, the fact that it's free may contribute to its ubiquity and longevity, notwithstanding its poor design and other undesirable characteristics.

But none of that was the point of my question. The article on which the original post was made was effusive about how elegant and beautiful LaTeX output is, and how virtuous an author is for creating such works of art. It almost made it an obligation of anyone who writes math to love the look of LaTex. I'm asking, notwithstanding the output, if the input and process are a mess, is this really such a virtuous thing?

I personally think not. Obviously, some others disagree.