It is common practice to abbreviate the name of a case. For example, "Brown vs Board of Education of Topeka" is almost invariably referred to as "Brown vs Board of Education" or sometimes even just "Brown v. Board". "Dred Scott v. Sanford" is invariable referred to simply as "Dred Scott". "Obergefell vs Hodges" is usually referred to simply as "Obergefell." This is particularly true when the context makes the shorter reference unambiguous.

That's fine if you're familiar with that convention, but if you're not then I wouldn't expect you to understand it straight off.

I see nothing wrong with the article abbreviating it in this way, but your ridiculously condescending comment is way out of line.