Jezmo, if you look at the aerodynamic formula for quantifying pitch stability it's clear that AOAs have no part whatsoever. It's a formula that's been the basis of design for many, many years and proven to be true. There are ways that screwing up the AOAs will screw up your first flight, but if the elevator is trimmed on that flight, you'll land an airplane that is less efficient but still has whatever pitch stability it was designed and built into it.

Pitch stability is a function of 6 things. CG location, wing chord, wing area, tail moment, horizontal tail area, and chord. That's it. No AOIs or AOAs.

So the post may have been abrupt, but it did have value. It's quite possible that both posters are pointing to the same cause.

On the other hand, posts that insult or embarrass should be reported. And that one was harsh enough to warrant editing.