True, but it's not about using the 10T link all the time. It's about using all of it for a few seconds.
It's the same issue with SSD speeds on mobile. They aren't even discussed in the spec lists and are the main factor of app start up slowdowns.
For the ram, I want to do local AI with mega models out there. So, the phone has to load 400GB to memory, run and dump it out VERY quickly (<50ms).