As for the BLUDTUPOWA puzzle, I didn't know that was a thing
It was added to the game quite recently, so it's hard to say what causes it to unlock. I haven't started a new kingdom in the last two weeks so I wouldn't know.
P.S. Is WEYTWUT 'Wait what' or 'Way to it'? Its hard to tell and really confusing...
I've always presumed it's "wait, what?" Your second interpretation never even occurred to me.
The only one that ever gave me any trouble was "BURNDAYRAZ"