Looks like there is currently no RDMA support for thunderbolt, so it's a much higher latency connection. Apple has RDMA over thunderbolt working, so I wonder if it's possible on Strix Halo.
There is one obscure product that actually did use the feature. The Sharp Famicom Titler (or Famicom Editor) was a full Famicom that could show an external video input behind the Famicom graphics.
It doesn't seem that bad to me? Most of the problems that I see in that video look like recording issues where the camera isn't handling max brightness well. Recording CRTs is notoriously difficult!
Generally pixel art created for LCDs also looks good on CRTs, with tiny text being an obvious exception.
On top of this, I find ads on app store search results to be particularly bad. It's a business model that comes with all sorts of perverse incentives. It's so bad for users and legitimate developers.
The Mac Studio, in some ways, is in a class of its own for LLM inference. I think this is Apple leaning into that. They didn't add RDMA for general server clustering usefulness. They added it so you can put 4 Studios together in an LLM inferencing cluster exactly as demonstrated in the article.