They promote it on social media platforms (including targeted advertising and partnerships with influencers) to make it seem as though it's a "bougie"/elite holiday experience.
The reality is that it's a light show, much like many others. There's nothing too special about it, and it's a LOT of money for a bragging rights social media post.
Thanksgiving Point does a good job, but you'd probably get more bang for your buck going to a city light show (or Temple Square) and then taking the family to dinner.