See - here's a little bit of the disconnect between knowing the answer and giving the clue and having no idea what the answer to the clue is. There are SOOO many directions to go with this, even just Equus there's about 6 ways to go. Then getting the right actor and making the leap that because he lived in a broom closet that gets you to "People Under The Stairs" is maybe not as easy as you would think knowing the answer. Honestly, I think the first 10 clues had a relatively similar pattern to follow, but the last 3 were all extremely difficult because of the endless directions to go.
I don't even see KJ Appa or Riverdale mentioned in that Twitter thread. Suffice it to say, that one had no chance of being answered correctly.