The interest isn't artificial; A lot of people (especially me) are just highly interested in this tech. I myself am working on a 2D variant meant for low-bandwidth environments to replace low-res pixel grid images.

You personally may not feel it, but there is a real, genuine interest, especially given how good it is at replicating photorealistic environments in realtime, relatively cheap (in comparison to NeRF). It's awesome.

Also, what would the ulterior motive be for someone to 'pump' this? There isn't a financial or clout-based motivation to do so. It's just interesting tech, which I believe we are all at least partly here for.