I'm sure she used that budget for other visual things.. Why not use that budget on other things AND have the LED?
It's just annoying to see people complain about the LED floor, backdrop and cubes because they're ascetically amazing.
They are but it is always cool to see something completely new. $50m is a ton of money. The music videos may only cost up to $1-3m. A lot could still go to a new stage.