I just watched that the other day and had the same reaction. I was annoyed that the ending moral was "okay, I can't understand it and it's just mysterious and that's okay," rather than "okay, I don't understand how it works NOW, but clearly there's something to this. I should continue to study it and in the meantime treat it as a valuable source of evidence."

I wasn't that annoyed though, because a few episodes prior Twilight had been totally right about a "curse" not being magic at all, with a "scientific explanation" instead.

Also amused that Twilight has a secret science lab with an MRI machine that she never uses again.