This is my point of view. Have you ever played a game more than once? Getting to that bit of dialogue that's a chore to read because you've already read it a few times and you know what they're going to say? "Just get to the point! *mashes button*"
That is what I don't want spoiled. I don't want to know what the animals are going to say yet.
I'm not worried about that, I generally have a memory span of 3 mins so unless I watch and re-watch I'll forget.
The big moments in AC aren't what makes the game special. It's the quirky things the animals do and say in between, running errands, etc. that I enjoy and none of the videos I've watched spend time on those. So yeah, I know what Festivale is all about, but I haven't experienced it and the magic really is in experiencing it for yourself.