It’s fully possible that I’ve missed something, but it doesn’t appear to be proprietary to me.
I like the repairability and modularity of my Framework 13 laptop, and I still bought a maxed out MBP M5 Max because for local LLM, unified memory is all that matters.
If you don't want to engage in a reasonable discussion, you can get bent.
That aside, ever heard of https://en.wikipedia.org/wiki/CAMM_(memory_module) ?
Technically it's not wrong to say it's about performance in the sense that if you clocked the RAM slow enough you probably could maintain signal integrity, but we're not talking some small hit to performance here, it'd probably be more like a multi-generational drop in memory bandwidth.
They want a Apple M_ Max like machine.
The whole point is that these APUs present a pretty unique value proposition (lowish performance GPUs with massive amounts of RAM attached), and framework is afaik the only vendor shipping them on standard mini-ITX boards