What does it refer to?

1) Start Thinking Outside the Box
2) What word in the English language is always spelled incorrectly?
3) If long and difficult words come to mind, take another guess.
4) Any ideas?
5) The answer is the word “incorrectly” itself!
6) Although this may seem to be just a nonsense question, there is much more to it than meets the eye.

In the #6, what do ‘more’ and ‘it’ refer to respectively?

Thank you so much as usual in advance.