I do not think anyone would guess it but most of the animation here is driven by alpha mattes. There are many ways to do the same thing; below are my displacement and alpha matte sketches made in various ways such Fractal Noise, Shape Layers & Expressions, Trapcode Particular, and Pixel Polly in After Effects. In the end, I decided to go with Cinema 4D to make my hexagonal reveal as there was more much control with the Fields functionality.