The problem is that this demo page feels like the modern equivalent of a Geocities page. It shows off the technology, but fails to show how it can be used tastefully by using it everywhere without restraint.
Additionally, I find many of the animations confusing and non-meaningful. For example, having an email envelope in a site footer being filled and flying off correctly denotes the concept of "send me an email". But doing the same thing for an email field in a form feels completely out of place. The user is not sending an email, they're just giving their information for future reference. Many of the animations are similar: they demonstrate a vaguely related concept, not the specific use case being demonstrated.
Additionally, I find many of the animations confusing and non-meaningful. For example, having an email envelope in a site footer being filled and flying off correctly denotes the concept of "send me an email". But doing the same thing for an email field in a form feels completely out of place. The user is not sending an email, they're just giving their information for future reference. Many of the animations are similar: they demonstrate a vaguely related concept, not the specific use case being demonstrated.