It's not about stealing, it's about respect and consideration. While I'd love to see a statement from them explaining why, hopefully GoldieBlox removed the music out of respect for the wishes of the creators. That's a good sign and a good thing, and it keeps the focus on the toys rather than on anything else!
I meant no personal disrespect to Mr. Brownlee and I don't think he took my comments as a personal attack. He just can't say it's from an iPhone 6. He did a great video about an interesting screen, but that last leap of logic just isn't supported.