Do you really think this was originally a planned feature by Tesla? That some cynical marketing manager sat down ans though "if we do this we'll get X impressions leading to Y new sales, lets allocate 0.7FTE engineers to the task"?

I very much doubt the design requirement for the Model X include a specification for "muat be able to produce Christmas shows". This sure looks like some engineer had a spurt of creativity, which qualifies to "hacking" to me.