That item popup is really worrying me as I watch more videos.
I know they only appear the first time you pick up the item (like SS), and Nintendo confirmed so. But, for me, the problem in SS was not really the message, but they fact that you had to endure them every time you loaded your saved game.
In BotW, they have pre-saved games for people and treehouse to play and the popups still appear. I mean, there's no way they got all the way there having the bombs, magnets and multiple clothing options without having picked up a single piece of food or weapon. Of course, this is a game with an active debug mode, so they could have just given the save game all the items without actually having to play the game, but I'm just assuming.
So will the popups reset in BotW when you load a saved game? I truly hope not, and if they do right now, I hope they fix that.