[Uehreka]

Pretty sure these were animated in Blender. This feels pretty doable with Geometry Nodes, and the particular look of the blurred reflections in the floor trips my “it’s Blender” sense.

[johndough]

You are spot-on. In one of his videos, the author mentions that he used Blender's Geometry Nodes: https://www.youtube.com/watch?v=w4kNHKcBGzA&t=190s