I remember the honey post but can't really pick the author right now as my head is not really clear (currently in the hospital with my son on another admission).
I'm actually more familiar with ANoVA than PCA. It is my go to method for testing for significance. I only learned PCA briefly and never really build on it.
No problem for the honey post. It is clear you have more urgent and more important matters to deal with at the moment. Good luck!