Relightable Gaussian Codec Avatars are very, very far from your off-the-shelf splatting tech. It's fair to say that this paper is more about a way of generating more efficiently, but in the original paper from the codec avatars team (https://arxiv.org/pdf/2312.03704) they required a A100 to run at just above 60fps at 1024x1024.
Nothing here seems to have moved that needle.
What would practically move the needle is enough money to buy an A100 in the cloud, or even 4-6 A100s to produce a Full HD video suitable for a regular "high quality" video call; typical video calls use half as much, and run at much less than 60 fps.
An A100 is $1.15 per hour at Paperspace. It's so cheap it could be profitably used to scam you out of rather modest amounts, like a few thousand dollars.