I find it annoying how out of the many so-called "grammar national socialists," many of them get the finer rules of grammar or meanings of words wrong.
For example, "because" takes the form of either "because cause, reason" or "reason because cause" - both are equally valid sentences, even on their own.
People claim "because" can't start a sentence because they don't understand what it does.
Because people don't understand what "because" does, they claim it can't start a sentence.
Similarly, which words should be capitalized in titles or
the slightly more obscure meanings of "affect" and "effect" - e.g. "he affected a British accent" - always seem to trip the people who are called "grammar national socialists" up.
Discuss "obscure" rules of grammar that Grammar national socialists get wrong.